Hullbreaker HM is an example of how dungeons shouldn't be designed.

[Katchoo]

GATES EVERYWHERE with the tiniest possible pulls of every single dungeon ever with damage being dealt being so low that tanks can almost self sustain themselves without a single heal. As a healer main, it got to the point that i'm not a healer anymore on dailies,

While this might be a problem from a challenge perspective i personally LOVE IT as a DPS. Why? Because i am SICK AND ****ing tired of endless streams of *pull all the stuff spam AOE*

This is a very personal opinion but i wanna play my job with all the interesting combos and positionals and what not. Not just spam-aoe-now.

However you are right there needs to be more challenge involved. I would always prefer less mobs but harder hitting.