I love lists lol.
1- absolutely,he should have everything from the Reign going forward,even if they have to Rebirth it a lil.
2-conner and Kon is like Clark and Kal,hero and secret identity.more Geoff sober personality in the secret ID,and more kesel bombastic when he is in hero mode.
3a-im not a fan of the name supernova,but a lot of ppl aren't a fan of Scion either,5hats the name I keep pushing.
3b- definitely needs his graduation to young adult,as in 18 or older(slightly).Kon has continuously grown since his 1st appearance,always changing,and that should stop now,it should be embraced.
3c- using his TTK to push his solar reserves out is a neat idea,I'm all for heat vision,bit I'm also wanting a intensified heat aura that we heard about,but never saw,this could be how we see it.i see kons powers as fragmented,but with more options,so him having more control over his reserves falls into that idea.
4-his superhero look could be any of these imo
5-i.loved the Hawaii as "his" place,and would love to see that again,course him being more all around mobile works also.the fortress in a volcano idea is awesome,I would love that
6-kon shouldn't be just a badass (like I also keep pushing for) he should be a caring and thoughtful guy,that's part of his character,and having him care for the son of Superman would make sense,cause he values Superman so much.
7- the YJ4 should never split up,and is a force in the DCU.friendship is magic damnit lol.