Working with the staff at hand, here's what I think I would do.
I would move Peter Kaliner into the 9-noon slot, move Hancock to PM Drive, Larson into 6-9 PM followed by Servatius. Kaliner is, in my view, a future talk radio "star". He's well-prepared, informative, entertaining, treats listeners with respect and is for the most part, non-combative. A rarity in today's talk show arena!
In conjunction with that move, I would require Larson to do better show prep resulting in less on-air questions to his producer about "what are we doing next?" (seems to me he should know what's next if he's doing proper show prep before hitting the air) and if he's going to spend so much time on the air talking to his producer-the producer should have a "live" mic so listeners can hear both sides of the conversation.