I think you should add spells to create fantasy units, and maybe a spell like disjunction in MoM to make all those spell created units go bye bye to counter act there high power level, I would say spells to add Dragons to your army would be cool, but I have the feeling Dragons are going to be the Channelers of the Beast Faction, anyways I think it would be really cool to throw in spells to add Angels and Demons to your Army.