LOL it was super late when I initially answered, but I'm still crazy at times lol
CYCLOPS- Scott and Alex will have quite an interesting build up with their relationship. And when they find they're brothers, the question of looks would be a thing (as it foreshadows the future). this all makes me wonder somewhat when the pinnacle of their introduction at least happens. Your scenario somewhat makes me wonder if Alex joins X-Men at some point, then we could get the revelation he and Scott are brothers. Having Scott and Alex butt heads like this would make perfect sense, knowing what becomes of Alex later on. Gambit's Trial and the X-Men's handling of "The Cosmic Rival" should play a key factor into Alex and Scott's bickering. This would also be a good moment if Scott is losing face with the team, for Alex to proclaim himself a better leader, and some starting to believe that, ykwim?
JEAN- So, SPOILER:
I feel this portion about Scott and Alex would happen later once they are adults, as Xavier dies sometime during the Phoenix Trilogy, leaving Jean Grey to take on his position as leader. That brings another level of weight on the couple, who desperately is trying to hold the team together (cuz the team sorta fall apart after Phoenix Trilogy, which is why Jean recruit new members).
Your bit on Jean's mind reading is pretty on point with her char. development. LOL it makes me think of the UNO scenario someone proposed. Before Remy came along, Jean knew how to win if she wanted to. However... that would change, all based on her tp not working on Remy. an interesting suggestion is proposed about Remy and why telepath's can't breach his barrier, (more on that). When Jean is unable to penetrate someone, it does frustrates her. With John, he possesses "shamanic psionics" so that could be why he can detect when Jean is trying to read him. I don't think John is as impenetrable like Remy is. But John gets angry and his intense aura would chase said psychic away. I think to that with John, Jean would feel a sense of rejection as, most everyone else trusts her so much. I like the idea of her trying to be "undetectable", this shows a progression of her tp. Using a new "technique" she prolly would be able to get a peak into John's mind... maybe that's when he blows up. She also could be trying to get answers as to why he was able to reach Remy. I know later we learn about Remy's "psionic bonding" and only those who share one with him, can see into this thoughts, somewhat.
And John would never peer into Remy's mind unless Remy allows him to. Thats why they have that bond, and others don't.
Initially chief was totally writing out Jean having deeper feelings for Logan, but I think that as you said, giving them something deeper during the Phoenix Trilogy, esp. when Logan becomes part of P5, this builds a relationship with Logan and Jean.
NIGHTCRAWLER- So your interpretation of Kurt would be... kinda like he's shy, and also unknowledgeable of his past? That would make a lot of sense. I do see this interpetation being our first introduction to Kurt, then as the narrative progresses he warms up to everyone, and everyone proves so inviting he'd wanna join in some. LOL that's cute, him teaching his teammates German. Nightcrawler has an interesting relationship with Rogue, and Remy to a degree. Um, an accident that occurred caused Remy to have to medically save Kurt, which indirectly plays into how he is selected to being a P5.
THUNDERBIRD- To understand the new John Proudstar, look up Vincent Valentine, like a short vid clip of him. John is no nonesense, matter-of-fact and does not bite his tongue. He tells the "cold blooded truth". John is also a bit of a loner, but very much a teamplayer. John loves Storm deeply, and isn't afraid to share with her I know. The brotherhood he has with Remy, makes him open to him. Idk what, but if Jean were to find something out- it could be that she saw John had peered into Remy's mind, and that would set John off. John is very much about trust, and promised Remy to never share his secrets. For Jean to detect that (detect John knows something, but what? sort of thing) it would make John mad. Jean would totally be curious at this. I think for John, Remy and Storm to form this inner "alliance" amongst themselves should be a thing. I see John being leader of this team, and would secretly/psionically order Storm and Remy to do things while on mission that's of their own agenda. And yes, Cyclops would be plenty furious, and wants to John accountable... atst dares not to.
I know of something similar to happen, when the team wanted to confiscate a top secret digital dossier on them; Cyclops gave orders upon arrival, but John steps in and orders Storm and Remy to do something else, and tells Scott he'd "do this alone". Remy uses his thieving skills to ultimately get the USB, and hands it to John instead of Scott. This causes a ruckus and Jean tries to cool everyone down and says "at least its in our hands". However, when Scott asks for the disk back at the mansion, John gives him a duplicate USB, telling Scott that he already checked it and found the original was a "self destruct" disk. Tension rises as Scott checks the files, finding John's and Remy's files seemingly altered, missing, or possibly deleted. This causes major problems, and it remains unknown to the team if John deleted some stuff, and if so, why? (SPOILER-ish:
John doesn't trust the X-Men, esp. Xavier, that's why).
BEAST- Yep this is Beast like, totally lol
Even in much latter arcs, its Beast who Rogue comes to, and asks him to watch over her children. He was the only one (available) that she trusted,
and trusted he'd honor her word when asking the puzzling request, that he NOT ever allow her children near Scott and Jean. This was bc she feared PF would manifest to kill her children. Jean and Scott didn't even know Rogue and Remy even had kids, bc of this. The potion thing to enhance his abilities would play into what happened in his past, so that's actually a rly good idea there. Maybe THIS is when we get the more feline Beast (as Chief said she hates feline Beast but using that look here would work). LOL I get where your going... do a Dr. Jekyll Mr. Hyde number on Hank... smart
ROGUE- those are good points on Rogue, and Gambit's relationship with her plays huge into her development. A major thing to remember is that
Rogue abandons the X-Men after the Phoenix Trilogy. This is because she blames them for... how things turned out, and this causes her to wind right back with Mystique. So... Rogue gets pretty complex as the narrative builds and progresses.
ANGEL- yea you did good with bringing out points for Angel. All those should definitely be placed on the table. Angel is the only one with "pretty" wings (Thunderbird's have a dark coloration, and are pratially obscured by the braces on them). In cominc canon, I think Angel did believe himself an actual angel, so I think that plays into this version of him as well. It definitely brings out his cocky nature...
that right there.
STORM- the fact we ARE
employing the "long line of white haired "goddesses"" plot for Storm (some of it) that would play into her feeling herself an elite member. Also, being trusted by the two most secretive X-Men, Storm would feel she should have command, and prolly would do things on mission to prove her point. This would sometimes cause trouble. I also feel this is something Storm would evolve into, as I believe she starts off being the glue to hold the team together, but after John and Remy brought her into their clique, she starts developing this secondary attitude, and the thought of being "the elite core".
GAMBIT- lol yes, Also to finsih something I started, someone suggested that Remy's kinetic energy allows an untapped ability of reading others' auras. Kinetic energy is the single most rudimentary force that unites and permeates everything, so Remy would have countless untapped abilities. He thinks he's just a peoples person, not knowing its his energy. While he's not an actual mind reader, he can tell Jean is trying to read him, and can even detect the reason. Every time someone tries to probe his mind, it causes his psionic shield to solidify, and it shuts them out.
Jean would forget to try her powers as Phoenix,
but then by the time she does... Remy already "evolved". I think chief said as Phoenix Jean would have been able to penetrate Remy's mind, but most definitely not after his "evolution". So in a way, it would remain unknown if even the Phoenix could penetrate Remy's psionic block.
PROF X- he's gonna have a real good plot, and I've envisioned the same. Moments of him being their uncle figure, but then mystery and questions causes those barriers to come up. I see that moment too, of everyone learning something about X.