Personal compsostion I'm using on my current PoTD playtrough (Using Unity Console to make companions have subclasses):
1. Eder as Unbroken/Streetfighter
2. Priest (Respecced Tekehu as Priest of Ondra, cs I cant stand Xoti, but I reccomend using him as a Druid on the next slot)
3. Wizard No Subclass or Bloodmage (Aloth) or Single Druid Tekehu for AOE control and damage
4. DPS that can pick off High Priority squishy targets like enemy casters. Can be ranged(Scout Maia with Red Hand) or fast movement meele (Monk/Rogue)
5. Flex pick on whatever you need. I like summoner. (Tekehu is really good here as well since he can also heal really good. I'm using Trobadour/Psion build by Boeroer).