The 3 teleporters made me think of SC when they were being targeted. Even though that's most definitely not connected. I'd love to see Banshee etc. but these small characters are not used much so Kurt and these others interacting can maybe create new relationships to be discovered as well as them with each other. That's how characters get started. They may be just curious kids that help lead up to the type of team you are suggesting and may be those characters will stick around to be students of them. BUT Kurt's enough for me as of now. The aim is interesting enough, what little was revealed. Kurt wasn't even the focus of his issue of GS nor is he used as much as a QC member so maybe that's an easier sell for me as a Kurt fan. For now.
I see everyone here forgot the fact that there is a weird tower in Krakoa that only teleporters can get to and the only one we have seen get there is Nightcrawler. I'm pretty sure this whole thing is Moria's plan to make all mutants obey for easily. So yes the team needs more than just him to teleport
That doesn't sound like Moira tbh she has specifically faked her death and kept herself hidden because she wants to limit her direct intervention in events for fear that they could ruin their plans for mutantkind. She learned her lesson when she manipulated Magneto's DNA which inevitably caused a Schism in their Alliance. I don't think she would risk that especially not by enslaving every mutant on krakoa.
If there is some plan to take over the mutants it's not Moira's.
She is, hence also wearing the SWORD yellow uniform in the preview. But considering the whole Krakoa Gate thing (how does that one work anyway? Did it eat a teleporter long ago and mimics their gateway powers) and being part of a team that teleports across the universe, it's not farfetched to assume Nightcrawler can request her visiting Earth for something.
Though now i wonder if the mutant with the power to teleport across realities from Si Spurrier's X-force has been brought back yet?