It would be nice if you could add a handfull of 1 map only servers for the most popular maps. What I mean by that is simply have a server that ONLY runs one map over and over again. Benefits:

1. Some people really like particular maps and would leave the server if another comes up and search one where it runs on currently.

2. Some people like to "learn" or "study" a map through repetition to get better at it.

Map dedicated servers (probably for all three game modes) would cover those two aspects.