Change the "hack pickup" message to something custom, to say something totally unrelated to hacks, and also make the map rotation shorter, both to encourage more players on the server.

I was playing with two others players today, and as soon as the "hack pickup" message popped up, they jetted.

Also, 45 min downloads are a deterent.

Someone ♥♥♥♥♥♥♥ bug the ♥♥♥♥ out of Phreeze.