. . . Are there mystery dungeons that aren't basic?

Like, Shiren the Wanderer, Izuna, Pokemon Mystery Dungeon, Torneko, Dark Cloud, etc...
Maybe it's just a weird coincidence between all the ones I've played, but myatery dungeons all have different ways your character gets built up, but mystery dungeons themselves are always real simple and have had nearly the same bag of tricks forever.

Not saying "they've always been basic so let's keep it that way." But because they've been simple forever I'm having a hard time understanding your meaning.
What do you mean when you say "less basic?"