Please be aware that this thread isn't limited to simply putting out whatever you may come up with. UnScape is in a massive dip right now and any move could be lethal if not thought through thoroughly.
With this I mean that you shouldn't stop at thinking of 'cool new features'. Think of the impact they may have on combat, other already existing content, the economy and the community. You could have a server with loads of content but without any fellow players you'll be gone in no time.
So before posting another suggestion; think of the short-term and long-term impact something may have and include those thoughts in your suggestion.