Minions should be account wide. Gil should be easily transferred between characters on the same account. Housing should be shared across account. Same goes for gear, materia and other basic stuff. I love this game, but having everything unlocked on 1 char is just plain weird to me. I'd like to play different races, like Viera and Au-ra, but starting over without help from a main character is just dreadful.
In that WoW did better. Pets, mounts, gold, gear, flying once unlocked on a main, the alts had it too.