Steve is a gaming icon on the level of Mario and Sonic. His moveset has extreme potential, and his stage would be amazing.
Ubisoft deserves a spot on the Ultimate roster! No character fits better into this world than Rayman. I'd like to see how they make him float for an amiibo.
To get an Elder Scrolls rep... would be awesome. Give him an axe instead of a sword... shouts, magic, and a dragon.