Law and the Multiverse did a nice writeup on the legality of the Dollhouse. You can find it here.As I recall, the show was generally well received at first, until someone pointed out that it was basically a combination of slavery and prostitution, and then there was a general loss of support for it. Unless they could come up with a way to change that view, I don't think that it will ever be remade.
Of course they could remake Dollhouse.
Heck since this is Joss Whedons weakest show, they could probably manage to make a reboot stronger than the original.