i don't think it is fair to the old players who already got them to reintroduce them in future events like val and Xmas .....
By that time i think they will add new harem
and as for future event i hope that they can tell new players fight in stages they haven't reached (Eg: I was about to reach the juy sea when the val. event ended so i didn't have a shot with val Abreal )
All I have is hope that they reintroduce them in some way.