It's just that Dragon Age Origins was really, really, REALLY big. And it totally dragged on several instances. The amount of pointless side-quests devoid of fun was astonishing. Such a huge decrease amazes me, but I really don't mind some streamlining. Origins at times felt a bit too much like a chore, as in "please, let this freaking dungeon be over" or "My goodness, I've been investigating this NPC's conversation choices for the last 6 minutes and I haven't been even mildly interested by anything the guy has to say".
It was deep and engaging, but it was setting an entire mythos, while this one keeps the ball rolling in a much more contained environment. This one is a streamlined game with streamlined storytelling. Better, worse, we have to wait and see, but if it is to Origins what Mass Effect 2 was to the first, I'm glad that's the direction they went for. I dreaded the notion of replaying ME1 or Origins, due to sheer length and some particularly annoying sections here and there.
Besides, DLC. I used to have several gripes with it, but hey, it's more content I'll enjoy, so heck, might as well enjoy the ride. Here's to hoping they add plenty of content that adds length to those looking for length, making those that don't want to engage on endless menu-fiddling and conversation-studying actually SEE the ending.