Agree that the ending was a cop out. And I can't stand Witherspoon's acting mannerisms. However, the show grew on me after my doubts during the first episode. Everyone frantically throwing everyone else under the bus was hilarious.
MVPs - Duplass, Pittman, Hayden. Crudup is an underappreciated actor, but in this he took the all-knowing wise guy schtick too far. There were no nuances.
Anniston also has annoying mannerisms - in this case the non-stop gasps, throat-clearing, hand to belly, etc. - and as others have said she and Witherspoon veered into madcap comedy territory in some scenes. But I think Anniston did good work here.
As she and Witherspoon took the network down on live TV, all I could think about was the great movie "Network."
Also, I've worked in several industries, and TV news is the one where I've personally known three suicides, including a dear friend. It's an inhuman business.