Agree, adding a “group-friendly” activity was actually a great idea, but without any actuals means to get said group, it sux
It’s fair to say the game is not “booming” with players and excitement.
From a personal pov : my clan is dead (2-3 people online), my friend list was kindof full in S2 and is not also dead/offline/playing another Bliz game, and trade chan is silent 
Been trying to run Malph since 2 days now, only to get once in a group that dissolved after 2 runs because one of the guys was just there to leech. Yesterday evening, i spend 2,5 hours in game, trying to build a group (while doing other things obviously, not standing in town). After these 2 hours there were 15 messages in the trade chan : 13 were from me and 2 from random dudes looking to buy Duriel runs - sad