I'm sure there will be a mod after release, just like for DOS:2. This is the one thing that I didn't like about the starting party members. They are essentially all evil (except Gale, but even he has some certain "tendencies" due t his condition). Normally the first playthrough on an RPG game, I play a paladin, or something similar. Tanking, healing, pretty much survival until I get the hang of the game and it's mechanics. Imagine a paladin with this group of companions... TPK the first night at camp. :P
Anyway. I hope that they expand the number of companions so that you could have a "good" party. With current companions, that doesn't seem likely.