And so, after playing for some months Akeron (based on old Tera leak) and Menma (recent leak), i realized that private servers have limits that can't be overcome if who release the game do not have capable coders behind able to implement new content and upgrades.
What i mean is, private servers are based on a single leak, a release, the content is fixed, once you reach the cap there is nothing left to do because the game cannot be upgraded like the official with new stuff.
For example, playing on Akeron, the oldest leak (with IoD v2), the devs just balance and change some xml files but the base game, the assets and end game contet are the same and once you complete them there is nothing left unless you play the current stuff over and over.
Unfortunately Tera need a full time development team capable to add new content to it, but i guess is not fleasible on private servers because it require to invest money. Just my 2 cents.
ps: My main account here is blocked, can't receive the confirmation email, something gows wrong with the last migration to the new forum i guess, so i'm forced to create another account with a new email to beable to post here.