Joss Whedon trades on the goodwill he's built over the years making such interesting series as Buffy the Vampire Slayer, Angel, Firefly and Doctor Horrible, and hands us... this.
So, what do I think of Dollhouse?
I think it's fantastically overthought. And this is from me, the most fantastical overthinker you know. (Hmm. That could be my new supervillian name...) This is obviously a concept that Whedon has thought about and thought about and ruminated on for about a decade, and in most things that have been overthought, all the OOoomph has been filtered out of it.