Tera has huge potential and the only way to bring this out is private servers. Tera is beautiful, the combat is fun, the endgame PvP is really good, BAMs are fun.
BUT the quests that you need to do to progress to high level are boring, menial, repetitive crap. If we have the ability to run our own servers and change the system a bit (less quests that are harder and more in depth and higher reward) it is going to be a huge improvement on the game. I am not the only one that thinks this. Have a read around on the fansites and blogs it is pretty much the consensus. So I hope you are able to start something with private servers and get the community going on it.
Good Luck!