It appears that The CW is struggling. Let's see - ages 18-34 aren't watching tv as much as they used to. So let's set up a channel for them. Great economic model. Not.
How about an AARP age group broadcast channel named "The New 40"? The national feeds could begin with a simulcast of the CBS evening news and end with a simulcast of David Letterman. And in between, feed shows that appeal to that age group acquired jointly with cable channels. Lower upfront primetime programming costs. Focused advertising.
Example shows to consider as models: Everwood (yes originally a WB show with terrific cross generational interaction), Mad Men (within memory period piece), As Time Goes By (really funny if you are over 40), Six Feet Under (even the old folks had sex before they died), 100 Centre Street (anything with Alan Arkin), Side Order of Life (only keep Joe Regalbuto and Susan Blakely in more episodes), Golden Girls, The Closer, Saving Grace, Monk, Huff, and Dancing with the Stars (if we have to have a reality show) to name a few.