After some discussion, I believe this suggestion should be taken in a whole other direction:
Instead of pretty much reviving the moth subtype PR, which died for legitimate reasons, make moth wings simply a cosmetic option for Kida, without changing the rest.
This would, along with giving them more options in terms of personalization, fit the lore of the species, as it's clearly stated that some individuals can possess wings, though, just like their extra pair of arms, they are mostly vestigial, and serve no purpose for actual flight.