Re: FOX Shared Universe
With the FF reboot being development right now, I don't see why it would be impossible.
Its not like they are integrating the FF world featuring Jessica Alba and the actors we saw in FF/FFROTSS into the world of the X-Men. The world of Fantastic Four hasn't been established yet since its being rebooted right now.
X-MEN RI5E' MUTANT OF THE MONTH | JEAN GREY | PORTRAYED BY FAMKE JANNSEN
"All kind of things." - X1
"This is the only way" - X2
"Kill me before I kill someone else" - X3
"Where else would I be?" - X4