I've never played on a Headshot server before, but I must say it was a lot of fun. Free for all, fast respawn times. I like it.
I've played the entire map cycle this morning and while some maps might be too big, Fuel Dump for instance, it didn't really bother me. Currently the first player to get 30 kills wins. That could be increased because some maps were finished in 2-3 minutes.
You might want to reset the frag records as they are dated from 2012'ish and sometimes are over 150 kills, which isn't even possible to break.
Oh and I have a question. Why do the bots drop grenades after they get killed? The grenades themselves can't kill you, but you'll get launched and possibly splash to death.