Was just wandering how easy it would be to only use barbarians. The stat penalties might make it difficult and the lack of healing and casting too. Might not be enough decent weapons and armour to go around either depending on party size of course. Might be a good idea to have one or two of them using ranged weapons.
I did a barbarian run through a while back and ended up having to give in and hire Ronald from the church to keep the maniacs alive.
I think the TemplePlus Mod could help you a lot. I read through the site the other day and there were quite a few improvements for barbarians (like tireless rage, etc).
Actually after hearing him sing a few times, Ronald managed to somewhat calm the wild spirits of his companions.