Varis probably has no idea what he's talking about. Viera and Roegadyn probably won't stop being Viera and Roegadyn just because seven more Rejoinings happened. At most they'd become twenty feet tall, with nigh limitless aether reserves and borderline immortality. Same as everyone else, really. Perhaps those nigh limitless aether reserves would grant them the ability to reshape their physical body any way they saw fit. And perhaps that would explain the development cost saving decision to make all of the Amaurotine NPCs identical.