I'm running a Druid and right now I only have the base 4 party members from around Gilded Vale. And though combat is going fairly smoothly I feel like my party is basically garbage. Aside from the fact that I see no health heals, only endurance, my priest seems to lack any good heals so far save his AoE but he dies if he goes anywhere near melee, so I can't use that well. Everything that seems good on my Wizard and Druid hit allies as well so when I rarely use my per rest spells, I usually can't use them well (but I save them until absolutely needed since I don't want to blow all my camping gear after every encounter).
Beyond that I have absolutely no idea how to equip anyone or even remotely what I'm doing in the picking/using spells department. And while I want to switch the fighter for the paladin when I get her the Tank seems much better at holding aggro from what I've seen. Ultimately I was planning for: Pali up front, with Chanter slightly behind and then Druid/Priest in mid with Ranger and Cipher in the back.
Bonus question: If I make a mistake leveling someone up, am I stuck with that mistake for good?