As an admin and a daily player, I can say that the MW2 server has not been any less populated than normal. In fact, I think it's been busier throughout the day and night more so than usual. This could also be due to the holiday week, but I don't think the current map rotation is slowing it down in any way, regardless. Most comments I've heard and seen are positive, and people are enjoying the stock maps that haven't been played in a long time. The server is generally slower around dinner time EST, so if you've joined during that time, you may have experienced lower numbers of players.....but it picks right back up until the wee hours of the morning EST. As for not liking maps, I'll say what I say when players complain in the server about hating/not liking a particular map or rotation. The maps are changed weekly, not everyone will love every map, but you don't have to play the map if you don't like it.