Man I recall times before LFG, 1 hour or 2 hours spent looking for a group for a dungeon as DPS, 30 mins isn't huge in the whole grand scheme of things.

The only way to fix this is more tanks, why this game released with only 2 tank jobs I dunno, queues in WOW are a lot shorter then this for 5 mans, 15 - 20 mins at the worst for me. Then again has like 5-6 tank specs and all play differently to each other.