Maybe you can look at putting the Retaliation and Decimation DLC maps in the rotation owing to the recent release of Crysis 2 Maximum Edition on Steam (which should introduce quite a few more new players).
EDIT: Also, +1 to lowering the ping limit too. I was playing on #4 (I think) and most of the time at least 50% of the server was 300+ ping players.
EDIT 2: Yes I'm fresh meat on your Crysis 2 servers. Bought the Maximum Edition on Steam today.
Extraction has been added to server 1 Extraction maps that have been added are: Downed Bird Sanctuary Liberty Island Wall Street Pier 17 They appear about every 5th map and please let us know how they go.
It's still there incep7ion, looking at it the last couple of days and it seems to be crashing about 2 hours after I start it; I'll put in a service request and see if we can get the server stable though this probably won't happen till next week; until then try get me on steam when you want to use it and I'll try and restart it for you and see if a few players in the server keeps it going.