Bring back all the exotics, there is no reason not to.
The rumor I have been hearing is this is the last dlc, if that is true, and weapons and characters aren't going to be carrying over. Then there is no reason to not have all weapons have a y2-3 counterpart.
Idk if anyone else agrees with this or not, but I just feel stupid to not have all the exotics if this is going to be the last.