Cover showing the whole cast... that's typical of a finale. Plus the "what is the fate of She-Hulk and Jack" line mirrors a similar one in Iron Man's...
First solo? It's only the first one called Phoenix. Teen Jean had a solo ongoing and there was that recent mini, both of which were called Jean Grey....
It's about 50/50. Katie wasn't superpowered, but turned out to be a villain (part of HYDRA) despite her 616 counterpart being Kate "Hawkeye" Bishop....
Yeah - Kamala's actually been killed off twice, and you think she hasn't had a trial by fire? The first time was in Champions (apparently electricity...