i think we need a fighting game where the characters are just wizards. and instead of having the standard characters and such you just get to make your own spells. including counterspells and such
with a complex spell creation system that's impossible to make a build that beats anything thrown at it using to prevent there being a single optimal build
maybe theres also outfit creation stuff where different pieces of apparel buff and debuff certain spell types, like a pyromancer's robe that gives a major bonus to + extra defense vs. fire-based spells but does the opposite for water-based spells