I'd honestly favor a gender lock, so I guess I'm the boogeyman. I'm not a fan of changing lore for these types of purposes. Lore does evolve, but one of the biggest allures of male viera is the rarity and vastly different outlook on life. Some people will point out certain mounts and attire, but you can explain away much of that a lot easier than the introduction of new playable races. People really wanted a new bestial race, but some also wanted viera. I do not think either was needed, but their inclusion is understandable and easier to explain than male viera. Female hrothgar get the unfortunate boot, due to SE wanting to make female viera and will likely want to keep the genders balanced afterwards.