Originally Posted by
Adire
Non cross server communication, easily soloable content outside DF (which enforces non cross server communication), zerg encouraging events that end fast with no reason to keep the group together (GW2 was awful for this at launch, hunts in FFXIV are similar), inconvenience of PF vs DF, to name a few.
If they wanted to have DF, they should have really made cross server communication possible. Having DF while not having cross server communication strongly, and rightfully makes a lot of people feel like talking to people in it isn't worth it. The alternative, PF, would be great if it was the only way to get groups. People would have to be much more social.
Having both really discourages socializing on two fronts. People use DF for most things, and can't communicate cross server. If they could, it would encourage more socializing. If people only had PF to use, they'd be more social, but DF draws most people towards it instead.