I was on your server earlier (assuming it has a name similar to your username) because I couldn't get on to mine! I've done a fair amount of digging and haven't been able to find anymore than you have. Pretty sure that 'open' command is meant to work but I think it's currently just broken.
Community hosted servers just need a lot of work in general - I was looking for all those features you mentioned too... Took it all for granted on source servers!
Just gotta wait I guess..