Seems to be working quite well (Level 76, Shalozar Basin). A few suggestions, if I might:
1. It tries to engage mount even when running short distances to loot mobs. This isn't natural behavior and might look suspicious. If lootable corpses are within the loot range, a mount should not be used.
2. It's wasting time that it could be using AoV. It does a check upon completion of looting and if mana is > 80% it switches to dragonhawk. There is no need to do the check at that point. AoV could be in effect for the entire time the toon is running/riding to the next combat. It's a minor niggle to be sure, but could get you closer to 100% mana more consistently.
3. My toon has yet to ever start running towards the corpse before it is dead, even with the option turned on. Do I need to change the premptiveMobHP to a number higher or lower than the default of 18?
Great CC though!