Yeah, I wasn't excited about this because of his Star Trek work,* but because I liked Pushing Daisies and absolutely loved Wonderfalls. This is a man who makes television with a distinctive voice, knows how to write interesting characters, and can maintain a fundamental optimism that I think Star Trek requires.It's been noticed before - which is why I was surprised how universally positive his reception was, both here and on Reddit.
But I guess, after knowing his work on Hannibal, and seeing him genuinely geek out in that interview, its because he is a genuine fan (i.e. talking about his once encyclopedic knowledge of Romulan politics), has a strong sense of style (Hannibal looks beautiful), is appropriatly intellectual (witness his description of his awakening to film with Alien's psycho-sexual themes for example), seems to be a humanist who supports the general Trekian worldview, etc.
That already seems to put him well ahead of a lot of the competition - although I would have been interested to see what Seth MacFarlane or J Michael Straczynski might have brought to the show. Who he hires for his writing staff will be very interesting. Whether he consults with NASA, or has a science adviser will be interesting.
* Though I would rank "Living Witness," "Drone," "Bride of Chaotica!", and "Relativity" among my favorite Voyager episodes.