MD seems to be the most active manager on graal 2014, i have yet to see a manager actively online on other servers. you should be thankful for the bug fixes.
here are some things that bugged me about delteria though.
Certain Rare Weapons no longer drop - excluding the holiday weapons, im talking weapons like black seed, blood reaver.. the main reason I have started playing this was to obtain blood reaver, my dream was crushed on day 1 though..
Bow aoe nerf - this made it impossible to hit goblin healers on walls now, sometimes it tends to miss even when im shooting on the same line as the monster. my friends that used to play said bows weren't as popular even before the nerf, there is hardly any reason to use it over a warrior/mage. because it's still slow, charge is cancelled when you are hit.
Difficult to find party - many people are either lazy or playing hide and seek so you end up playing by yourself being unable to do certain dungeons.. it would be a great addition if there could be a party matching system that teleports your party to the dungeon entrance when your members are ready.