Hi Mr. Clean,
I do not know if you have seen this mod yet or not, but if you have not, check it out, its been out for almost a half a year now, and is a lot of fun to play. Also a lot of players are crossing over it to it from CS. Its based on the half life engine as well and is a half mod to boot like CS. Its called Natural Selection and there are a lot of servers that play it now, at the same player amounts as most CS servers. It too also uses the map feature we are talking about.