I have an idea. KXAS could start at 4am and revive the "husband and wife" commercial used in the early 90's when they expanded to 5am. For those of you not familiar, it was perky wife getting ready for work (telling husband to pick up clothes from the cleaners) and the sleepy husband sitting on the edge of the bed holding his head in his hands. Then, the "Texas News 5" theme music comes on the tv set. All of a sudden, the husband perks up and says excitedly, "Hey Honey, the news is on at 5 o'clock in the morning!!"
As for their people having to get up earlier, why not just stay up all night? Just kidding, but one of the first early morning newscasters in Seattle used to come in at 11:30pm and work all night to prepare the then-new 6:30am newscast. Needless to say, he did NOT anchor at noon.