Looking good. Uploaded it to the beta server and attached a demo with some suggestions. I don't think 4 team koth would work well on a map that small.
Edit: Yeah, just play tested it - the 4 team thing doesn't work well at all, even with 8 people. You'll have a couple teams of 2 actually fighting for the hill, while some other team just sits around shooting people making no attempt to score points, then somebody will switch teams and you'll have 3v1 fighting for the hill while the other teams seem to have no concept of which team is winning and keep killing the 1 guy instead of going after the team that's ahead in points... at least that was my experience. Still fun, but I think it would have a better chance of being balanced if there were just 2 teams.