The thing is, adding a new race is a ton of work. Not only do they have to create two genders, model them, create all new animations, and whatnot - all of which is a one-time deal - they also need to modify all existing and all future gear for the new race as well as the old ones. Every new race adds to the effort of all gear creation forever. That's a lot to take on.

My point is, this isn't about having weak excuses not to make a race, this is about not having a good reason to make a race. That said, if they introduce another race and it isn't the one you want, by all means complain. But if the debate is between Viera or no new race at all, you need to do the convincing.