Some can just knock it out and some have to lock themselves in a room and get to a fever pitch of self-loathing before they turn in a first draft. . . . each writer's process is screwed up in its own way.
I usually base my characters on composites of people I know. One trumpet player in SIDE MAN is really a mix of four different guys I knew growing up. Patsy , the waitress, is a mix of about three different people. I like doing it that way. I start with the characters, as opposed to plot, location, or some visual element. I write more by ear than by eye. I always work on the different sound of each character, trying to make sure each has a specific voice and speech pattern, which some writers could care less about.
The problem is these days people don't watch television together. The husband is downstairs watching The Game and the wife is upstairs watching The Good Wife. They don't need a show they can watch together. What family dramas are on now that are working?
If you can't get your core audience to watch the show, it's very hard to then pull in enough people outside of your fan base to your network. The networks are just so branded now; USA can't really do a dark despairing drama and FX can't do a blue-sky show. People watch the networks they watch.