nah, not this time around.
By function I'd prefer to have a tank, meleer, caster, and healer. Buuuuut, 3-man party means I have to do a lot of swapping to do so, I can't swap anyone that's being targeted by anything, and having only one healer is a huge liability. So, what I've settled on is a just a 3 man crew of super badasses (Vaan is tank/melee guy, Penelo is mainly offensive caster, Ashe is primary healer -- all know moderate status spells) and team B (Basch, Fran, Baltheir) are staying about level 10 and have a quickening under their belt for a swap-in combo if needed -- also grabbing a bunch of Item augments if Team A is wiped out so they can get them back up to speed.