I mentioned Macross.
Ghost in the Shell. We live in an era where Cyberpunk games are a dime a dozen. Ghost in the Shell would make a great Action/Adventure game about solving crimes and third-person action.
Bubblegum Crisis. How is there not a third-person shooter? It's time!
The Last Starfighter. Not hard to imagine what this could be.
BERSERK! 3 games exist. One Japan only. One is a mediocre Warriors game. The other is a clunky Dreamcast game (I like it tho). We need a good-sized budget Berserk game in the Black Swordsman arc or later. I truly want Capcom to make it with Itsuno. It's not a clone of DMC but def an action game. Soulstice may be as close as I ever get.