Str, con, dex- no change.
I've always liked:
Imagination: Your character's creativity, adaptability, and problem solving: mental dexterity; similar to int +cha blend
Knowledge: what your character knows, can learn, can deal with (mentally) and what he can access quickly in his mind to bring against a problem. mental Con, i guess;sort of a wis+int blend
Presence: How THERE your character is. How much of an impression do you make, how much influence you have, willpower, etc. Mental str, perhaps. A distillation of Cha.
