Hasn't Bob Schieffer publicly said that he DIDN'T WANT to be the Evening News anchor permanently?
He has home, family, strong contacts from his long tenure in DC, and is a strength for CBS in that regard.
Perhaps knowing that there'd be "light at the end of the tunnel" as an interim CBS E. N. anchor enabled him to make the committment to commuting from DC to NY for a time.
Wonder what would happen if Walter Cronkite could be induced into doing more for the Evening News... if--at age 91--he's able and willing to contribute more than his voice introducing Couric.
Personally, I grew up with the CBS News of the 60's (KCBS, San Francisco on radio and CBS-TV on KPIX, later KFBK, Sacramento and KXTV) and things haven't been the same since the Kalb brothers, Daniel Schorr, and other solid reporters began trickling away.
Maybe television needs to be looking for solid wire service reporters that can be trained and developed into broadcasters... which is what served Cronkite well in his years at CBS... and I suspect influenced how he guided the Evening News. He retired on March 6, 1981 because of CBS's mandatory age 65 retirement policy.
Had Dan Rather NOT gotten caught up in the bad info he chose to air about fellow Texan GWB, he might still be sitting there.
Ted.