I think it would be right for them to give people the option to switch races when they bring out the new races. I dont know how they would do it but i could imagine perhaps they could mark all activated characters with a one time option to reselect race after maintenance/update is finished. It would go a long way to pleasing players both active and inactive. From a personal point of view im quite happy being a Plainsfolk Lalafell so i probbably wouldnt use it.