I don't get the love for DAO. The game wasn't particularly special. I thought the story in DA2, as well as the characters, were more compelling (recycled levels, though - no good). DAO was very "we have to go kill a big, bad dragon now, but first we've got to do our best LOTR impression and get dwarves, humans, and elves to work together again." DA2, I thought, had a lot more gray area to work through rather than right vs. wrong. Choices weren't as clear in DA2 as to right vs. wrong.
So far, I've seen nothing written that is out of line with what I'd expect out of an RPG set in a massive environment. As long as BioWare avoids the "you can overpower the game on hard before you max out your character level" that plagued average RPG's like Amalur: Reckoning, their character stories and main plot should make the game stand out. At 80+ hours for a single main story playthrough...I'm wondering if many people were expecting to hit the meat and bones a lot sooner than they actually will - within 5 or 6 hours like with Origins. My completionist playthrough of DAO only lasted 58 hours (including Return to Ostagar, Warden keep, and the one where you get Shale).
Many reviews have stated that the game doesn't really start to move until either hour 15 or hour 30 depending on the review and how quickly you advance the main plot.