Great list. But why Scott and Kasich? It just doesn't seem very... practical. They are both pretty unpopular in their home states.
Scott is kind of a formality. They kind of have to give him a speaking slot, as he's the governor of the state the convention is being held in. If they didn't, it would be insulting. But there's no indication of when his speaking time would be, or how long it would be. It might just be 10 min. at the beginning, in which he gives a generic "welcome to Florida".
Let him talk for ten minutes at three in the morning and let him say nothing political. If Floridians associate Romney with Rick Scott, Obama just got 29 free EVs.