Jinko, why exactly do you want to remove stamina? It adds another layer of skill and strategy. It adds another layer of things to pay attention to, how exactly is this bad? It's not, at all. You say "Why do mages have to manage stamina and mp, why do melee have to manage TP and stamina. Well, maybe because it makes the game/combat system a lot more interesting?
Let's not dumb down the game anymore please.