Thanks for your detailed explanations Thoreau. Just to be clear, if we remove the ip block the population won't change. There will just be more dungeon items on the market that nobody will purchase.
Forcing people to a certain play style no matter what will discourage people. The population is low and nobody can't deny it. Like 1 month ago I made a guild. 71 people joined and they were playing, farming and stuff. Today NONE of them is online.
As for this, the ip block is 2 years old, I doubt 71 players quit just because of the dungeon, even because being 71 i find it odd that they couldn't organize party. There were certanly other reasons behind, if you know and want to explain it is appreciated.