I'll keep this short, I have a small list of maps that I think should be added to the server. Every map I post I have played myself and found worthwhile, at the very least, you should look at these maps in other servers and try them out for yourselves.
First up is cp_bestinclass_v2. It's a neat little map where your team has to every class to capture 8 different cap points on the map. It's a very challenging map where you need to prove you're good at your class to pass, it puts a whole new spin on the game. Although you spend most of the map separated from the other team, you fight quite often at the actual capture points.
http://www.fpsbanana.com/maps/47484Second is cp_oilrig_beta3, this one is a very large CP map that is played on (you guessed it) an oil rig. It's very large and very well balanced, defiantly worth trying.
http://www.fpsbanana.com/maps/53813Next is avanti_b1, from what I'm told it's a remake of a TFC map with the original gameplay intact. Instead of standing on the capture point and waiting to capture it, one person takes a briefcase (the flag) to each capture point and captures it instantly. Give it a shot:
http://www.fpsbanana.com/maps/52688That's all for now, give them a shot and tell me what you think!