Here's how I think we should cover some of the chars who we don't have space for in the herostat: add them to the Danger Room! (including Prof/Stark/DP. That way we could leave Stark and his 'Beacons' alone)
Jubi/Magma are easy, and we should stick to the moves that exist. Except that Jubi's 'Overload' (yeah, Gambit's was Overload and Jubi's was Detonation in XML1, but Gambit stole the name 'Detonation' for XML2) and Magma's 'Fiery Sled' need to be slid out into third moves, just like Gambit's Detonation and Iceman's Ice Sled (and Colossus' Siberian Express, but that is a different story). Otherwise, their current Movesets/Icons are sufficient for the DR. Mystique's 'Bomb' thing should have damage/radius increased to Xtreme levels, and have it counted as an xtreme. And her 'Shape Shift' counts as a boost, yes? Plus, she needs icons. What say you guys?
Other characters who (imho) we should look into making plans for more fleshed-out playable DR versions (like heroes, as in 2 or 3 attacks, a boost or two, and an xtreme; plus icons so you can see what the moves are):
1. Archangel or Angel (seeing as only one skin can be used in the DR, should we go X-Man or Horseman?)
7. Multiple Man
and some of the XML2 bosses.