I like the idea of a voiced protagonist, but I experienced the difference between a silent hero (DA:O) and a voiced hero (DA2) and it did not improve the game, it actually made it worse.
You're conflating different issues. The reason DA2 is considered a failure isn't more prolific voice acting. It wasn't even only the game itself, but how much it changed from the rather rigid expectations of how the game should have been set by DA:O. Bioware hasn't been afraid to evolve their art throughout the history, and there has been hits and misses all along the way, and not the steady decline some people like to rationalize their bias with.
