I kept all of my MVS games, although I quit collecting for several years, and now regret not picking up a couple of titles. Thankfully, I did pick up the majority of what I wanted. I did unload all of my Nintendo boards, but still have loads of CPS2. I have thought about unloading them, as I don't see much purpose in holding onto them now.
I am at the point now I am trying to decide if I should just build a decent multicade and sell the majority of my arcade gear. The only thing right now I dont really see myself selling is my MVS and a decent portion of the MVS games. I enjoy them too much.