I'm against using this sort of system because of the drama it has created on eBay. I once got a threatening message from someone who left me negative feedback (which was justly given since the seller sent something in very poor condition when it said excellent) and have heard that I'm not alone in getting the feedback.

I don't think this would make the forum a friendlier place; I think it would just create a lot of drama.

If someone has a problem with a particular seller, the best way to do it is handle it with that seller alone. Work it out amongst yourselves--sometimes people have a valid reason for not getting their stuff out as quickly as they want to (could be illness, death in the family, broken vehicle, weather-related conditions, etc).

Also, when there is a problem with an item arriving broken, chances are it's the post office's fault. I know a lot of us on here can talk about that. (I've found solid styrofoam generally works best for padding--used some of that just yesterday on a Classic).