Honestly, I've become distrustful of Bioware's marketing.
I believed them when they promised that tightening DA2's scope (single origin, single city) would result in a much more dynamic story that would react to your every decision, but it didn't. How you choose to enter Kirkwall only determines two quests, how you get your expedition funding only determines if you ever see a particular dwarf again (and only once at that), whatever decisions or quests you do has no effect on Kirkwall's physical or even social dynamics, and which side you choose to support doesn't even change what order you kill the boss in. Even on a personal level you have absolutely no influence over Hawke's mother's death, Isabella causing an invasion, or Anders blowing up the Chantry. Worse yet, the game literally yanks control of Hawke out of the player's hands and has him/her make decisions unrelated to any of the player's decisions during the time jumps.
Despite that, I believed them when they promised choices mattered for ME3 - a promise Bioware had been repeating since ME1, along with promises of no "Reaper off-switch" and "door 1, 2, 3 options". The game was great up until Priority:Earth, that much is undeniable, but the last moments utterly failed to deliver on any of the promises of player agency, gave us a Reaper off-switch (regardless of who else the Crucible winds up killing, it will always kill the Reapers) and the red, green, or blue door choice. What's their response after promising player agency for five years? "Artistic vision" and "we didn't expect such a demand".
And to be perfectly honest, my memories of DA:O aren't rosy either. I hated the DLCs, with the exception of Stone Prisoner (and the last DLC, didn't buy it so I can't comment on it) they were things I wouldn't even download if they were user-made mods. Then came Awakenings and the rude discovery that even official DLCs weren't even compatible with it - this in addition to the bugs that the Awakenings pre-patch brought about, the buggy state of Awakenings itself, and the complete lack of patches for the expansion afterward.
So, no, I'm not afraid of DA2 "innovations" making their way into DA3, because the problem lies higher up the creative chain (though I can't speculate exactly where in that chain it rests), but morbid curiosity has me looking into how DA3 will turn out. No intention on finding out first hand though, I've been burned three times, that's plenty for me.