What are your thoughts and concerns about this?
This takes the burden of trying to make a up a criteria for the bargain bin and gives it to the community. Especially with decals and prints which people always seem to bitch about, "OMG WHY DID YOU BARGAIN BIN THIS FAEC LOOK YOU APPROVED THIS ONE!"
I'm all for it. I do have a couple of concerns though. One of them is that there might be a good addon with a bad presentation, although I suppose that would get noted when it was tested and approved.
My biggest concern is that people won't actually bother judging them. Maybe you can have the modbot post something to the news feed that says something like "I have 10 new ad-dons today for you to judge." You would need to think of ways to encourage them to judge. Maybe people who judge accurately get weighted more and get some kind of tag on their RTB profile (totally did not steal that from newgrounds).