yeah but
sharing is better
i mean, what would happen if nobody ever released their addons and only hosted it themselves
you would need to script if you ever wanted to host a popular server
the average blocklander cannot script
server exclusive addons shouldn't be the only thing keeping the players back, it should also be gameplay, administration, friendliness, replayibility, etc.
Currently the server is hosting a WIP infinite (waves of) zombies mod for slayer that is eventually going to get released. It's different from using the new bots however since they can't use pre-defined weapons , there are some balancing issues that need some time to be fixed and the AI needs improvement.
If you are talking about the unreleased weapons - well they've been in development hell for so long nobody would expect a release anyways. Plus a lot of other stuff is simply not done yet.