What's the characters in FFIX you don't bother using?
I never use Quina and Eiko. The party i mostly stick to is Zidane, Steiner, Amarant and Dagger/Vivi.
I don't use summons so Eiko is pointless, Quina's attack are to weak and unless you catch frogs his blue magic is worthless. He's still the best character in the game though.