I really, really hope the X armor special changes depending of the costume, that way we can get Fourth Armor, Gaea Armor, Falcon Armor.
Also i demand a Ultimate Armor Nova Strike Level 3 Super.
Or even better, what if X's Armor depended on the Infinity Gem of Choice, and thus is tied to gameplay?
There's already loose talk about how each Gem is pretty much like a groove that affects your character's performance. Making it so X could go between stuff like X2's, X3's, Gaea, Falcon, Shadow, or whatever would just be all the sweeter to me.