What constitutes being informed enough to build an opinion on a TV show? In my experience, anything more than one episode is extraneous. For one thing.... it's their job to hook me with their TV show, not my job to nurture it for most of a season in the hope that it gets good. I have a billion uses for that time. The onus is on them when they put out a pilot episode to hook people with it. That's just how television works.
Further, I have a pretty good nose for my own tastes in TV. I can honestly say that I've never managed to enjoy a show on the whole if I couldn't enjoy an episode in isolation (and I tried like crazy with several shows, let me tell you). Occasionally, I have been surprised to see a decent show improve drastically to become a great show. Star Trek: TNG is a good example. But in that case there was demonstrably the seed of a great show there, even when they were busy re-writing TOS episodes rather than doing something of their own. Burn Notice is having that effect on me right now... I'm pretty sure there's a show there. And a 5 minute clip of
Secret Army blew my mind and is making me wish for a Region 1 DVD release. But I detect no such seed for my future enjoyment in Dollhouse (seeds of enjoyment for other people are stipulated. They just have no baring on my enjoyment, alas). The handful of times I tried to proceed with a show that lacked that seed proved painful.... like bad relationships no one knows how to break off (ye gods, Voyager!)
Leaving aside botanical metaphors, my opinion is that having Dushku chained to the project (among other issues) severely limits its potential, and I would rather see Joss putting his time into something new or any one of his old properties that have more potential, IMO. As such, I was very much hoping this show would be canceled. YMMV, and all that.
That said, I'm actually glad other people are enjoying it. At least then it's not a pure waste of Whedon's time.