Since with Mac OS X Lion, there is no longer a separate "Server" version, would it be best to combine the Server forum with the general Mac OS X forum?
I say no. There are many people that won't be upgrading their older Mac OS X Servers to Lion and they may want the Server section. It's also good for those that install the Server app for Lion.
Even if magically every Mac OS X Server updated to Lion, I wouldn't want threads about server configuration, issues, services, etc mixed in with the general OS discussion.