Everything I've feared about mythic+ from retail has made it's way here. Elitism, gear score (for a dungeon!?), even preferred specs (for a dungeon!?). Why? Simple...because Ascension copied the timed element of mythic+ from retail. Because of the timer, people are forced into certain specs, even at higher gear levels...all to beat the timer. It doesn't and shouldn't be this way.
Do away with the timer. Make the dungeons difficult, but don't have a timer. You can make rewards based on death, not time. No deaths? 3 chests. 1 death? 2 chests. 2 deaths? 1 chest. 3 deaths? failed. This is in the true spirit of classless WoW because players won't be limited to specs that have huge aoe or splash.