Though that's separate from the limited choices and consequences issue you raised earlier -- the question there is whether the kind of power that Hawke rises to is actually useful. Turns out you can do some things, but you can't do others, and the really big stuff turns out to be in the "other" category.
This, of course, is a staple of historical heroic literature. But if you want to say that it comes across as a bait-and-switch in the CRPG context, feel free.
But Hawke can make numerous choices that can affect Kirkwall. Most of those turn out to have minimal effect, if that. For spending a decade in a city "rising to power" Hawke's decision have very little impact.
Hawke becomes rich and famous, but until mark of the Assassin doesn't rally rub elbows with anyone of consequence save as a hired merc.
Leandra, the Bone Pit, Grace, Elthina, even the sibling (to a greater or lesser degree)... Hawke is so plagued by tragedy, the is Dragon Age's Butt-Monkey
edit: I actually think DAI's Inquisitor was a too-strong response to that, as you go from condemned prisoner to savior of Thedas with rather unseemly haste...