We cannot ban people because other people find them boring. That would be a bad thing, and in my opinion would be totally out of keeping with the site's ethos and values. I still feel uneasy about purgatory, and worry I may have opened something of a Pandora's box by doing so. Perhaps we can modify the rules in some way, but it cannot just be a means of filtering long-term RE'ers.
We have tried routinely banning proxies in the past. This was unpopular among certain members of the site. Almost everything is. We can try it again, but it's not as though this is something that has never been thought of before.
I cannot come to the forum as often as I would like. I try to get a bit of posting in here and there, but I can only get on so often. In my time here, what I have learned is that the upper boards are always best when there are plenty of people defending FET, be they newcomers or regulars. How we encourage that, or if we really can, is another matter.