Au'ra were introduced in the end of the 2.0 series as an introduction to 3.0. Which means Au'ra would effective have to time travel to become the WoL. Using this as a defense against Male viera is pointless as it's already happened before.
No, no such assertion is required as the WoL (player character) is a singular existence, every other player from the WoL perspective are pretty much NPC's/adventurer's with the power of the echo.
As to maintaining an experience of rarity then all they have to do is not utilize male viera as NPC's to keep them "rare". And if the next argument is gonna be, but the players themselves would make them not rare then why did they make Duskwights playable considering they're rare to cities, and Miqo'te are supposed to be uncommon to Eorzea.. yet us players seem to defy those facts.
And yet no one complains about any of that, but Viera is where the line is drawn?
