IMO fast travel are quite boring. All you see are repeat screen shots of monsters,masks,etc. I think to replace the fast travel is to get a unique shout that calls Odahviing not to fight but to assist you on your long travelings. You would soon be in control, of where you want to go, and after you give a command to drop you off he then leaves and then your off.
An addition if you fly over a group of bandits you can give him a command to attack, while you're on him. You do have a choice to get off and fight he still still be there until you dismiss him.
Anyone else thinks this would be a great addition for skyrim or maybe in the next game?