The X-men have been working alongside former villians quite regularly for the past decade or so. I dont see why anyone is acting shook like this is new or out of character
First of all, I love your avatar, Wind Rider! Where is it from?
And then I get what you mean by having Ororo play a central role, but I was under the impression from interviews that Hickman specifically had plans for her, that's why I thought she might take a lead role in the new X-Men team (who I assume might get their own book?)
They are working for a villain, Shaw.
They are showed not to be liked and their racism is called out.
They wanted to enter the Crucible against Callisto to kill her because they have not been able to kill anyone since they have been on Krakoa not because they care about Callisto regaining her powers.