I'd say that the team that makes the fashion accessories is probably not the same team that makes the dungeons. If I had to guess, getting fewer dungeons is a result of more time being spent on Bozja.
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Bozja (1 unique solo instance with Trial arena, 1 Battlefield Zone and 1 48 player dungeon with 2 possibly 3 more zones coming), Firmament(Brum/Foundation rebuild likely coming in 5.5), Terncliff, Lyhe Mheg, Diadem rework, and the ARR zone up date all required work from the zone/dungeon modeling team.
Well TBH bird wings are a product of evolution and share anatomy with our hands. They look natural and connected to the rest of the bird. Angel wings are usually just stuck at the back of a humanoid with no heed paid to how the bones and muscles would connect. Not sure how bad that is here since I haven't bought the wings yet nor seen anyone else use them (aside from that preview in the letter from the producer live).
Only once, and only in one direction.