When they added the Vanu Vanu and Gnath costumes from their respective beast tribes during Heavensward I was hoping that it'd mean in the future they might retroactively go and give use similar type costumes for the ARR Beast tribes.

I for one would love to get ones themed after the Amalj'aa, Ixal, Sahagin etc. So I guess this is just a request, maybe if enough people want it we can get the suggestion to the dev's eyes/ears!