Yeah, I don't quite understand that either... people want short 20-30 minute dungeons, and they want them to be at least moderately difficult, and then they say that current dungeons don't accomplish this.

The only Tier 1 heroics that can't be done in that time frame are SFK, DM, and maybe GB. ZA and ZG can be done in about 30 minutes with a really solid group, and come 4.3, the number of bosses required is being slashed to make runs even quicker.

I ran heroic Deadmines last night in a really slow group and stuck it out for the whole thing. Here's why it was so slow:
- the tank was new and didn't know what to do
- three of them were guildies and were explaining pulls on vent to the tank
- the tank had some serious connection issues
- pauses of 3 minutes or more after most pulls (trash or boss)
- wipes on Helix, Foe Reaper and Cookie
- one DPS was 18k, the others 4-7k

That right there describes possibly the slowest dungeon run I've EVER had. Even with ALL of that, my run was 1h 45m - most of it spent not playing the game.

Saying heroics take 2 hours now is straight up hyperbole. They used to when each boss and trash pack incurred at lease one wipe. Nowadays though, even with low DPS or a wipe or two, so long as people don't AFK, it STILL only takes about 45 minutes for most of the dungeons.