Originally Posted by psylockolussus
The thing about the younger version is, they would be always seen as the "younger version" where as Famke/Halle/Patrick/Ian/Marsden/Kelsey/Rebecca will be seen as the original version and the one set in the present timeline. And appearance of them except for Rebecca, just made it more clear to the audience.
disagree on some of those actors
halle can easily be replaced majority of x men fan base have never liked her portrayal
marsden has'nt really left much if any impression with his take on cyclops it may not be all his fault but he can be replaced aswell
i know i am not alone but as great as ian is fassbender is animated series and comic book magneto brought to life he is the magneto i grew up with
only ones who are hard to replace is famke and stewart