so the future can add all those new characters, and its fine, but the 70's cant add a new x-man or two just because its overcrowding a 70's roster of 4 mutants??
I see a doble moral here, sorry, guys.
The future has 8 returning actors, so that part of the movie didnt really need new mutants, but hey, its cool to have a few new faces. We'll have to wait to see really how many new mutants will appear.
But on other hand, the 70's have 4 mutants more Wolverine again.
If this isnt a bad balance, then I dont know what it is.