Curtis
In an ideal world , your suggestion of different waviers is fine, but here in this sue happy nation....IMO no way . Analogy.... 22 caliber & 45 cal, bullets both can & will kill.. one just makes a bigger hole. As long as there is fire coming out the back end ,our law(Rule) writers don't care.
FWIW I think the AMA blew it when they got out of the certification of "Turbines" for use in the states. When certified by the ama at least one person with authority(To approve/disapprove) would have hands on time with turbines and would realize that they(Turbines) are not life threating as some view them.
Semper Fi
Joe