Yea, this isn't an issue for me. I'm not sure if I've ever changed out party members once I got my starting squad together. DoS2, kept all the same companions. Even old games like Chrono Trigger I kept all the same companions except when forced to have a different one. Especially for a D&D game it makes it feel more like a P&P session to me since it normal to have the same companions for the whole game.
