The inconsistencies In Available headgear For Viera

[Reno-Reno]

The Abysoss headgear are all available for Viera which makes sense they hide the entire head model so any of the issues with getting Viera headgear to work don't have to be considered. I mean hell they even hide the ears which whatever i can pretend they're folded back against the head but this begs the question why aren't the crafted helmets usable too? the crafted helmets also replace the entire head model and yet they can't be seen on Viera and I don't really understand what the difference between them and the raid gear is it feels entirely arbitrary what helmets (not hats) are availablre for Viera.

This inconsistency has been around for ages the Cryptlurker hoods but not the helmet? The Imperial hats but not the PVP reward? The Reaper hat but not the Dragoon or Dark Knight helmets? (although this could be down to the /vison functionality the Dragoon helmet has)

I just don't understand the seemingly random nature of which full head model replacement headgear can and cannot be worn on Viera. The issue is exclusive to Viera as Hrothgar can wear all of these which again makes sense the entire (or most of) head model is replace

This is a ramble so TL;DR rabbit abyssos yes but rabbit crafted no?? why????

edit: I was wondering if some gear pieces are due to the face showing like the Tiamt helmet but hood already have isolated faces so it just gets more confusing and arbitrary.