I'm a bit skeptical after seeing it as well. I think I'll enjoy seeing the character again, but the overall success is reallllly dependent on how the other characters mesh along with the overall quality of the writing.
Man, I just am not excited about this. I think I would have been if they would have changed it from Frasier to something else. (Freddy lol?). Like "It's just another spinoff", but to keep the name Frasier sets a lot of very high expectations for me, and this trailer does not bode well for those.