I stopped reading when I saw you use Dollhouse as an example of FOX letting genre shows die. FOX gave that show way more chances than it deserved. No other broadcast network would have renewed it for a second season.
I get that you hate FOX because they canceled Firefly, but you don't seem to be aware that the people who made that decision aren't in charge anymore, and FOX is now a lot more willing to let genre shows build an audience. Sadly, they still get a big "F you" from blogs like this one.
If I were a FOX exec I'd say screw it and stop picking up genre shows, because people like you are determined to hate them no matter what they do.