You know the post just there with McKellan!Erik and Stewart!Charles gives me the mental image of Erik and Charles constantly flirting with each other in the middle of battles.
And at some point they’re just affectionately insulting each other and Raven or Jean Grey has to go
“Fight going on here, guys.”
“Yeah. Sorry about that. Ass.”
“Ooh, fuck me? Usually it was the other way around, Charles.”
And of course, everyone would be a mix between aroused and disgusted.