Just finished watching the Final Fantasy XII "movie" (all the cut scenes) and have decided to change my team lineups a little:
Cos they are all from Dalmasca ...
They all seem to have a past of sorts...
Gameplay-wise it's good to put Vaan (dark mage) with Ashe (white mage) and Penelo (monk/ time battlemage), as all three of them can do physical damages and cast magic. While Basch (tank) with both Balthier and Fran who are range attackers. Fran also serves as a red battlemage so she can cast basically all sorts of magic (the guys are just hitters). Balthier is probably the weakest of them all (wielding a gun is kinda cool but just not very practical in a fight) but he is, by far, THE BEST character in this game.