I think one feature that currently is a huge missed opportunity is to be able to either edit your Equipment Sets without having to remove and recreate them to change even one item in the set. If there were a button to update the current Equipment Set or an edit button it would make dealing with many Equipment Sets a much better experience.
Hopefully this is seen and implemented somehow. I did find someone posted something similar about a year ago and 1 of their 3 suggestions was added (the reorder feature) to Equipment Sets which gives me hope!