The development team would receive a lot of negative attention if they decided to add female hrothgar but not male viera. Especially since the latter is a much more popular request than the former. So we're likely to either see both of the missing race and gender combinations added to the game or neither.

There's also a strong track record of the development team adding things based on popular requests, so I see no harm in people continuing to ask for the missing genders to be added so long as they remain civil.