1. Slith tank - pole weapons, assassination, strength
2. Human fighter - melee weapons, defense,
3. Human fighter - bashing weapons, alchemy, wide skill spread
4. Nephil archer - archery, melee weapons, lockpicking/disarm traps, and defense.
5. Human priest - some bashing weapons
6. Human mage - some melee weapons
I actually think this is a weaker party, since bashing weapons aren't very useful, and archery doesn't cause much damage. All characters end up have training in priest spells, and in one game all my characters could cast divine thud (I could also turn a battlefield into a painful field of blades). I use spells a lot, and I use my warriors to take out more important monsters like mages or jeweled golems, and to simply take damage. I haven't played in a long time, though, and haven't developed any new strategy.