I understand there is a lot of hate for LFR, and to those people, I'd kindly ask them to stay out of the thread.
But to those who do enjoy lfr, I'd like to ask this.
Current queues are anywhere from 15 min - 45 min on average for any given wing. (for dps)
The hardest role to fill is of course healers. This means there are TONS of dps sitting and waiting. If lfr's were increased to 40 man, with very little change to mechanics, we could potentially see more dps slots fill up, lowering queue times, with roughly the same number of healers.