1. Auron - All that strength will be pretty sweet in slaughtering enemies.
2. Vivi - Best black mage around, and my favorite character in IX.
3. Garnet - My favorite out of all the white mages/summoners. Yay.
4. Terra - A strong mage and a strong warrior.
5. Locke - The coolest thief around, and a pretty good warrior as well.
6. Cid (FFVII) - His dynamite/cigarette attack will be a great asset to the team.
7. Edge - Awesome ninja skillz, and a humorous personality.
8. Faris - Everyone needs a pirate in their team. Besides, she has all her job crystals.

A team of my favorite characters who also happen to be good fighters/mages/whatever.