Games need to be balanced, genres really not so much. If we were to like re-do D&D from the start to, say, actually emulate ol' Appendix N, we would not have gotten Vancian, which was, like, literally unique at the time. Rather, we'd have wizards performing rituals and waiting for "the Stars to be Right" and whatnot - ironically, possibly having the odd psionic-seeming power. But, not the crazy variety & power that a D&D magic-user could display over a single day at high level - and, by 'high level,' like EGG in the 1e PH, and mean, like,
6th... at least 6th... (ie higher level than Gandalf).
OTOH, if we want to go for a modern source or two, like, oh, Harry Potter - oops, all Wizards.