Between Viera men and the Reaper job, I'm inclined to believe that if enough people ask for something and in a persistent manner then there's a decent chance that it could be added to the game at some point in the future. Ultimately the lore will be tweaked as needed to accommodate such elements, or a new point of entry might be added to the MSQ's with less restrictive conditions.

Either way, the game is supposedly locked in when it comes to another ten years of development which means there's going to be plenty of opportunities for neat stuff to be added in the coming years.