IF they did add a race change feature (Something I deem highly unlikely, though i would like it nonetheless) I feel that the best way to move around the personal story would require you to have completed the level 30 personal story (Where you move away from racial choices into the orders) This would be a very good place to set it as it is not asking too much for people who hate the personal story, along with setting a very slight limit on levels (If you want to change race before level 30, you should probably just make a new character)
