eh; no Ubers are easy ways to get powerful combonations or special abilities for example

Cid: Can control laws and distribute JP and Steal it as well

Babus: Gets Alchemy and Time magic wich would normally require rough training of a Nu Mou

Ezel: Gets Blue magic and other interesting things even though he is a Nu Mou

Lini; Cheyney and Parazza: All get ultima and are able to be aquired early in the game (except Parazza)

I feel you should have to work for powerful characters not know how to find a cheatcode site