I did adjust the vote map system to try to force a little more randomization.
Basically what it does is half of the maps in the vote should be least-played maps. We can't force people to vote for them, however and trying to force it would likely hurt the server population so it's not something...
It happens when procon restarts, which happens once daily. The vote can also be ignored when population drops and certain maps get removed from rotation.
Saying something doesn't make it true.
We don't even look at a person's donation status when handling reports or misbehavior. We have banned plenty of donors for multiple rule violations.