I agree. If it were mine as well, I'd have it pinned/plated. Just because of how active I am and how active I want to be, I don't want the pain to keep me from doing stuff later down the road. No guarantees the pain will be completely gone even after pinning, but at least the chance of your shoulder getting so much better functionwise will be significantly higher than leaving it be.
I agree completely and operative fixation would allow some early motion. Either way I hope you have a great result. Good luck.