As I understand it, those levels are supposed to be much, much more of a challenge. And the matched party can currently give you 4 DPS, or a mix of DPS/Tank, etc.

If the difficulty is that much more, it would probably need a party like the DF sets up, with a Tank, Healer, and 2 DPS.

From what I saw, mostly it looks like people queued just stand around and wait. Or else they are off doing something while they wait for the queue to pop. Not much in the way of talking.