Using Wind-aspected aether makes a lot of sense. The lore book goes into why all the different dragon types look like they do and one of the biggest indicators is if the individual dragon in question developed with an even amount of Wind and Earth aether or if their aether is heavily aspected to either Wind or Earth. Generally speaking, dragons that have four legs and two wings are balanced (Vidofnir), dragons with two legs and two wings are Wind-asptected (Twintania), and dragaons with four legs and underdeveloped or no wings are Earth-aspected (Lesser Dragaon, Brobinyak). That the dragoons would be taking advantage of that seems plausible.

To add to that, nearly everything the dragoons use originates with dragons in some way. Gae Bolg, the spear, is made out of dragon bone and the lore book says there's rumors that it's kept in vats of dragoon blood until it's needed. Drachen mail is forged with dragon blood and both Estinien and Alberic both say it's power is derived from the bond the dragon blood makes with the users inner dragon. And Nidhogg's Eye's influence is pretty much what started the job in the first place. So I'd say that most of the stuff that makes dragoons, dragoons and not just lancers has to do with a dragoons' inner dragon (whether they got it by Ratatosker's blood or Nidhogg giving them it) becoming powerful enough that dragoons have magic/abilities/strength that usually only dragons have.