HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

I would like to suggest an improvement for the artifact backpack. Add a function (button) to sort the backpack by artifact ID, from smallest to largest, and from largest to smallest, to save a lot of time when the backpack is almost full. (After all, sorting the backpack also takes a significant amount of time, even when it's only 8x8 cells). It would be immediately clear how many artifacts of each type there are in the backpack (2 or 3).
Also, here's a slightly "cheaty" suggestion. Allow transferring artifacts from the backpack to another hero at a distance: for example, take one artifact from the backpack and place it on the image of one of your heroes when the hero's characteristics and secondary skills are displayed, thus transferring the artifact to the hero's backpack at a distance. This would save a turn, mana, and time. It would be convenient.