How to make a Whedon show.
Step one: Attractive girl with superpowers. Bonus points for making her stupid. Center story around this girl
Step two: Write a bunch of dialogue that sounds vaguely like the way people really talk, esp. regarding pop culture. Make it rambling and geek-like, yet strangely foreign, so that the net result is like watching a play of geeks talking.
Step three: hit trope-filled cast of five or so. Include bad-ass nerd and the bumbling normal who occasionally gets a moment to shine
Step four: Fill with unfleshed, poorly explained antagonists.
etc. etc.