I find (some of your's) lack of faith disturbing.
A pre-planed fixed schedule of a Star Wars TV show featuring underground Jedi and Darth Vader as a reccuring villian, and yet people are sitting there imagining the worst.
By its very nature the show will have to be dark, cause we know the Jedi characters have to die, and we know that more then likely Vader kills them, whats not to like about that.
TV show and budgets are much bigger now, and take much bigger risks, see Farscape, Lost, Alias, BSG, Babylon 5 et al.
Moreover, a network is not going to mess with the show at all. This could be interpreted as a good/bad thing depending upon how involved Lucas gets. I doubt highly George will direct the whole first season, as he has been wanting to do films about the Romans for a long time now.