I haven't played a lot of Dragon versus Dragon combat, so I'm not in a great position to commentate, but a lot of your points are very good.
I don't think that each time you use the jetpack you should have to wait 1.5-2 seconds before using it again, that would probably cripple its legitimate dodging usage. But maybe increase the amount of charge a strafe-dodge uses, and add the 1.5 second cooldown before it recharges once you run out of dodges. That should make it impossible to constantly dodge forever.
I also like the idea of a 10-15 second cooldown for when the Dragon dies. The only downside I can think of to that is if you're attacked early on by an enemy Dragon, before you have much anti-air and the aggressor Dragon kills you, but the 20 recruit cost to respawn would probably cripple you, timer or not.
