Gunner/Mog Kight - Concentrate on Rush/Ultima with 8 panel range
Paladin/Fighter - Fighting machine
Defender/Gladiator - Tank
Summoner/RM - Doublecast turbo Madeen 1st turn and just watch the totema like move.
I love all Nu mou other than the monster based one's (sage is cool).

Oh and never underestimate the power of throwing a curveball by making a Paldin/archer who uses boost just before comboing.