Me too. I was looking forward to it. Now I have your same fear.
Even the "crazy idea" I threw around few posts above (which wasn't a wish of mine, but an idea of what could happen - mind me) would be
unwelcome at this point. Any AU!Warren, even an adult one, would not be the same one I like - he wouldn't be the guy who ascended, the guy who descended into darkness in X-Force, the guy who gave up some of his life to save Betsy's, the one who broke up with Betsy because he wanted to marry her/have a family with her while she clearly didn't, and so on.
I know that most of this hasn't been referenced again, and canon pretend it never happened, but
it happened. 616!Warren is the sum of all of this. And I refuse to accept and latch to another Warren.
Besides. I can't see any viability for a Warren that is "less" than 616!Warren. Unless they bring a Warren in ascended status, they can't have a Warren as "powerful" as 616 was up to his death. So it would make no sense to play with an AU!Warren when you could put 616!Warren to good use.
Meh.
I foresee weeks of lamentations in this topic. Let's all hug together.