they wouldn't remove ice climbers unless they're handicapped
and to be honest removing characters at all really pisses me off, I liked Roy, I liked Mewtwo, I used both of them on a regular basis damnit, I don't want replacements, especially not when they're done poorly
Ike is a joke and Lucario is kind of cheap
although it seems like i'm attacking you in both nintendo topics its just that i still believe that moving on is a key thing. you can always play the older games it's not like anything is barring you from it. yeah it's fun to play as roy and such but it's not like he's gone. i predict people will still play melee no matter how great or bad ssb4 turns out. i also disagree with your statement that ike is a joke and lucario is cheap, they replicate their respective games fighting style quite well, i always imagined that ike would be hulking, slow, but strong and that lucario would function the same like mewtwo but with more of an emphasis on "getting in there" and quintessentially super smash is a crossover game in which the people of nintendo whom work on different things can work together to create something that's always a nudge to nostalgia. as you stated movesets live on through certain characters, however their characters will just live on as their characters and they'll always stay established wherever they are. and furthermore i find the roster of this game to shape up well in comparison to others in terms of what people consider to be clones. (although i found dr mario to be the prime offender) i mean if you were to get down to the core you can say uhh luigi and toon link but of course they seemed to really developed differences in their movesets this time around.
but maybe the prime reason i think these things is to be honest i never held the same joy for mewtwo as others do, like uhh to be honest i haven't caught mewtwo in x and y just because i don't really want to, so that's why i don't warrant the same desire for him to be put in