It's absolutely an extra level of communication. I pull all the time as COR and frequently, even with very well setup parties, communication, etc., run into questions during the run. For example, sending me by myself to pull the West is a complete waste of time in Ceizak. I'm sitting there most of the time watching this room for repops and the big room can handle itself. The east side can also be managed by one puller. However, I see most groups setup with "Alright 3 cors, 3 bards and 1 thief - you all are pulling. GOEZZ!!!"
Unfortunately, a bigger problem is these average geared linkshell shouts. I've started not responding to some of these because their DD are really bad. As in, would not be hitting mobs if it weren't for throwing their airlixrs at Delve and barely having enough extra acc on the weapon and from hunters roll + madigal to hit, while eating sushi. This makes me wish they had made 95 R/M/E a requirement for getting access to Delve. Then the quality would at least be consistent, and we wouldn't have these groups that leap-year jumped from casual +2 empyrean farmers to thinking they could tackle this content well (as long as they got some really good support!) I guess the foregone conclusion I've known all along is to join a good group or start my own.
Edited, Jun 3rd 2013 4:51pm by TheBarrister