Since there are obviously different demands for how a dungeon should work out, wouldn't it be a better design to add different queues depending on the size/difficulty of the dungeon?
One group of instances where the heroic dungeons take 45-120 minutes with long corridors, optional bosses, difficult pulls, more complex boss fights with higher Valor/justice point rewards on completion/boss kill, a chance for a LFR ilvl epic when killing the end boss (low drop rate), and a goodie bag with random stuff in.
One group of instances where the heroic dungeon takes 15-25 minutes, similiar to most of Wotlk, 4.3 and MoP heroics.
With this system you would obviously be rewarded for your time effort, but in the end instances would be done depending on preferences and not force players into something they wouldn't like (assuming that gear drops and valor points earned per hour would be somewhat equal).
What are your opinions wether or not this system is ideal to be implemented?