Oh sure changing a name doesn't "fix" the issues with that are core to the game but it would have soured less people. It feels like if Dragon Age 2 was presented more as "another adventure in the same world" instead of "this is the true sequel" like they presented then people would have approached and treated it differently, warts and all.
As a rule of thumb, unless storyline is tightly bound they should avoid calling things sequels. I'm very supportive of the idea of multiple games in multiple parts of a setting where especially the "Dragon Age World" really has the space to do it....just don't call them sequels. :)