You know damn well they are going to screw this up. Jean grey will be black and cyclops a woman. Wolverine an Asian .
I don't know. I buy that they diversified the Eternals to avoid having to do it to the X-Men and the FF. I also expect MCU Logan to be Jackman as Old Man Logan and X-23 as Wolverine. The mob won't be able to complain much if they've got several black-lead films coming out at the same time. Black Panther will keep going, Blade will be a thing, FalCap's taking over the Cap movies, Ironheart's getting her own show, as is Rhodes, and nothing stops them from proping up other black/non-white characters. I'd love to see Denzel play Blue Marvel, but not in an adaptation of the mini; just do an original story. Or bring in his son John and have him play his anti-hero son. Throw in Monica and do a quasi-adaptation of the Beyond/Ultimates stuff and there you have it. I'd much rather watch that than Carl Manvers' next outing.
If they turn either Cyclops or Jean black then the entire Summers/Grey bloodline changes physical appearance and that to me is a dealbreaker. A non-Clint Eastwood looking Cable, a non-redhead Maddie, or non-redheaded tomboys Rachel & Hope (I still maintain there's a connection between them, even if the comics haven't explored it yet) don't interest me. Most of the X-Men are very much tied to their visual ethnicites and I personally cannot break from that. There are characters like Scorpion, Electro, Kingpin, Bullseye, Hydro-Man, Lizard, D-Man, Solo (the Marvel merc), and so on, whose race doesn't play much of a role. But most mutants are tied to specific visual ques and ethnicities, so you cannot go about changing them. Sinister is a Victorian Englishman, Shiro is Japanese, Rogue is a Southern Belle, Kurt's German, Banshee & Siryn are Irish redheads and so on. You just can't change them and pretend they're the same. Same with the FF. They are supposed to be the spitting image of Americana; change that and you ruin the identity. Then they just become like the Challengers Of The Unknown.
I have a pretty big wishlist for the X-Men, and the Summers Bloodline is central to it. If they change either of them, or the FF, I'm out, regrettably. So far they've changed Namor, allegedely, into a MesoAmerican/Mexican/Mayan. I'm 50/50 on it and if the aesthetic is cool, the actor charismatic (I still maintain he's too old and not handsome enough) and the suit cool, I'll accept it. Kang has been ruined, but maybe he'll wear a cool mask (all the movies I saw Majors in had him playing a clown; Hostiles was the only thing I saw him be more serious, but even then he was outclassed by pretty much everyone). Things are not looking good for my favourites, but I remain hopeful. Kang stings a bit since I had a very different image of him in my head considering the character's background in the comics. I also think it's pretty bull that the one character with tons of variants is the one that's getting a single actor to play him, and he's not even a good one. The Ant-Man guys must've known they were planning to use Kang in 3, so literally why did they waste Fishbourne as Foster when they could've had him as Kang?
Wolverine will have a threesome then.
I mean, it's canon that they're having threesomes in the comics now. Technically. Kinda. It depends on whether you want to acknowledge it or headcanon it away. Current X-Comics are pretty wild.