I like the idea of giving the later character combinations of skills.
Shadow: Speed+Combat
Silver: Speed+Platforming/Hunting
Amy: Platforming+Hunting
Cream: She could be the omochao/instructor of this fictional game.
Blaze: Combat+Platforming/Hunting
Shadow: Speed+Combat
Silver: Speed+Platforming/Hunting
Amy: Platforming+Hunting
Cream: She could be the omochao/instructor of this fictional game.
Blaze: Combat+Platforming/Hunting