Just the fact that all other NPC's in COX drop one piece per item this would make Tekton exclusive if he would drop two items of the same kind when other don't. I'm leaning towards No Support tbh for this suggestion. It suppose to be challenging to complete solo/duo raids and in my opinion it is already relatively easy when you know what you are doing. By implementing such a change it would be even more easier.
I do understand that if it is in OSRS it might also be in Alora, but Alora is a game based on OSRS, it's not actually osrs and in some cases it shouldn't be exactly as in osrs, same applies to the whole COX, mechanics, strategy and movement. It is different from OSRS. I hope you got my point.