I would be fine with CBS dying. Aside from football, there is nothing worth watching, and any of the other networks could pick up their football broadcasts.
But you know that means the end of Paramount Television, and quite possibily Star Trek as well?![]()
CBS is the safest of them all. It has a large, loyal, geriatric audience that doesn't download or TiVO shows. The last remnant of the ad-watching TV viewer. CBS shows may have poor demos but they make up for it in sheer volume and audience loyalty. They're not like fickle Heroes viewers who bail on a show just because they object to how this or that character is being developed.

But the CBS audience is definitely not right for Star Trek. CBS viewers want police procedurals and if you throw sci fi their way, it better be 5% sci fi and 95% procedural. CBS tried diversifying into cult territory with Jericho and Moonlight, got smacked down, and now they've learned their lesson. They are sticking to their boring knitting and we won't see anything adventurous from them for the foreseeable future.
NBC and Fox have the Star Trek audience. Trouble is, those are the networks being hit first by the death of the traditional ad-viewing-based TV broadcast model. Their audiences want sci fi but don't want to watch the ads. That just means NBC and Fox have to figure out how to extract money from their viewers other ways; because until they do that, Star Trek (or other shows that appeal to the same audience) won't survive on TV.