Item Sets -- QoL improvements

There are a couple of changes to how item sets are organized that I believe would be huge quality-of-life improvements:

1. How easy/hard would it be to make it so that item sets added "all versions" of an item to the set. For example, if I drag a doran's blade to my ADC item set, can it automatically populate my shop with the correct version of doran's blade depending on what map I'm playing?
2. Allow duplicating item sets. Just let us click an item set and have a "make a copy" button. That way, if I want different item sets for each of my adcs or something like that, I don't have to recreate all the starter items/etc for each one, and I can just tweak the few items different in their build paths.
3. Right-click-to-add. Instead of making us drag items around, would it be possible to allow the option of right-clicking an item on the left, and then it will auto-append to whatever the last active group in the custom set is on the right? So if I make a new group, or click on a group, or drag something to a group, then that group becomes "active." After that, right-clicking an item in the item selection on the left will automatically append that item to the group.

Thank you!