Instead of duplicating items and adding them to the same area they are in with (copy) next to it, can you make similar functionality as “move to” where it pops up and asks where you want to move the items? So it would say something like Duplicate to Group or Duplicate to item or Duplicate to Board depending if you want to duplicate items or subitems and you get to chose where it goes to? I have to delete the (copy) from all the items I am duplicating every time and it is not very efficient…
What are you trying to achieve
Efficiency - not need to have to delete (copy) every time I duplicate things.