I actually, very briefly, thought about how good of an idea this would be. Then I realized how much work that would be and there's no way anyone is going to be able to keep up to that task. I've gone, myself, and tried to do a little cleanup around the spawn but it's just such a mess that you can't undo one thing without another 50 things going screwed up. There's absolutely no way to sort it all out without regenerating the whole area, which can't be done because people do have current structures there. So it just stays as is, and people like me will once in a while go and clean up abandoned doors/chests/furnaces.