What does Heavensward actually bring to the table as an expansion?

[Valkyrie_Lenneth]

I'm starting to think they'll need to do another Realm Reborn to really address the problems they are having with end game. It's hard to put into words, but it feels like the game needs side grades to avoid there being a single best set that trumps everything. Right now the only thing that matters is how fast we kill stuff, which is roughly determined by ilvl.

That would be the case even with side grades though. You don't need super awesome dps to get through dungeons, but everyone acts like if it takes longer than 20 mins its a waste of time.