Someone with a blend of all those qualities.
In no order I want a qb with a skill set consisting of: good enough arm strength to make just about every throw, excellent accuracy+touch, great pocket awareness, great vision, ability to read and understand defenses, and who excels in the areas of leadership, game management, and clutch play.
Not required: mobility/athleticism, Vick type howitzer arm strength, qb's that are there solely to not make mistakes aka Dilfer, Fiedler, types etc.
I want a QB that when he needs to I can watch Saban hand him the keys and watch him say, "go lead us to these game winning points son". God help me if i have to watch another person say "I want someone who can go manage a game and not lose it". I hate to quote a anything Jets but c'mon fellas "You play to win the game!" That means you need a qb who can grab that game by the marbles and say "Im your daddy and there isnt poop you can do about it"