A global mod that replaces units.

The changes are that the appearance of the units will be completely changed. The Minotaur is level 6 in both the 6th and 7th games, so I want to make him level 6 here as well. Well, as for replacing the auras, I couldn't think of anyone else to use.

What exactly didn't you like about the mages? You left the others (genies, rakshasas, titans, etc.). You could redesign the mages – make them on a flying carpet.
There's also the Simurgh; you could make him the sixth unit (in my mod, the Simurgh will replace the Phoenix and be summoned with summoning magic, while the Phoenix will go to the Elven faction).