Your info is very interesting and highlights some important points. The fact that inactive witnesses receiving about 20% of the vests is a problem that needs to be addressed, IMO. As a conclusion to the post I am hoping that you have some ideas or proposals on how to deal with this?

Addition: I just checked the overall witness list. There is only 1 witness in the top 50 that is inactive so most of the inactive witnesses have much less vests, which isn't too bad. Still good to find a way to clean that up.