Final Fantasy Tactics is rad. There is a lot of depth to each race and job, so your play style can vary drastically from one person to another. For example, my 6 part members usually include

Human - 2 Melee fighters / 1 Mage
Viera - 1 Melee fighter / 1 mage
Bangaa - 1 melee fighter.

Someone else might use the other races or more mages than the mix. It's all pretty rad.