This is the key paragraph of Hall's post:
So would Morning Joe and Mika help change CBS fortunes? Maybe, but they would probably have to change the show significantly from its primarily insider political buzz to appeal to a broader audience. But in the end, CBS demonstrated that they could change the entire morning anchor team without really changing the ratings so they may decide that with a bold move like this, they really have nothing to lose.
Also, what would a move to CBS do for MSNBC's morning ratings? Morning Joe has been beating CNN's American Morning on a regular basis. Would the loss of Joe and Mika send MSNBC back into last place? Likely.
(Cap credit to Art Vandeleigh from Wide World of Women)