lol i've played a few games on LM, and they were really fun, with all the old reg's
but it all ended the same way, at the end of three maps or so, either it changed to an unpopular map that some non-regs left OR one team was so good the other team decided to ragequit but either way, it ended up dropping us to about 9 people or so, ONE short of the NS and it went CO and the remaining 9 players, dissatisfied with CO, left
I think CO kills the server more than livens it up lol :/
If i wanted to play CO there are about 2135907346 other CO servers out there.. I originally came to LM cuz it was a well-skilled, mature NS server (and i wanted to beat HD, but..i don't think that's gonna happen any time soon)
So if you guys still favor trying to keep NS up, I would say change the map rotation as 2of8 suggested, leaving out the crap maps and putting in the popular ones, and lowering combat requirement to 8 or even 6..
best option imo is get that voting plugin or whatever it is they use on IAM's Gorge's Hideout or the NSA Classic Server, where there are two rounds of voting, first for a random selection of 6 maps or so (at least one CO and one NS map) and second round to vote on the two maps that got the most votes previously
this way, if the server wants to play CO, they can switch to CO whenever they want, otherwise it will field to the likes of the majority of the server population at the time