I'm with Jenny on the whole "hard to relate to" hero thing.

Dollhouse is pretty similar to a TV show called Joe 90, made by the guy who did Thunderbirds, Captain Scarlet, etc. In it, the protagonist (Joe) effectively became a super-spy, because each week they would temporarily download the memories/skill set of some super-genius into his head using special glasses, and he'd use it to save the world.

It was a show for kids, but the thing that made it work is that you actually got to see Joe being himself for big portions of the episode: he was this eager kid who just really really wanted to help, and that was something that you could relate to... he was taking big risks, doing it willingly, and he wasn't even in his own body when it happened. I think Dollhouse might have been more relatable if the dolls had maybe had a bit more personality from the very beginning, rather than being blank slates until things started going wrong.