Please implement this in as unobtrusive a manner as possible! I agree that an AFK kicker under heavy server load is a good idea, but when the server is not under heavy load (in the future), an AFK kicker would be really annoying.

A good fix would be "When the server is full and new players can't get on, kick the person who has been AFK the longest ONLY WHEN a new player trys to log in."

That would allow people to AFK as long as they wanted, unless the server was full, and at that point, it would only kick people as often as people attempted to sign in.

It also would mean that once server traffic decreases in the future, the afk kicker would still be there, but would not be active, since the servers wouldn't be under as much load.

In normal circumstances, an AFK kicker is incredibly annoying. These are not normal circumstances. As long as people can't get in because of AFKers, I support such an AFK kicker, but once that's not an issue, please, please don't leave a kicker active.