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

Many thanks to the author for the work already done. However, it would be nice to implement the following features:

Indication of the hero's backpack capacity (e.g., "N out of M possible artifacts are in the backpack");

In the artifact trading window (and not only in this window), add an expandable hero's backpack (an N x M table) with the ability to select multiple items. In short, it should be possible to select a bunch of unnecessary artifacts at once and exchange them for some resource (or transfer them to another hero), instead of "playing" with the mouse, exchanging each artifact separately;

The ability to quickly upgrade units in the castle (e.g., a hotkey + click on the unit);

An indication of the number of resources required to upgrade a unit, because there are situations when there are few resources, and only 100-200 gold is missing for the upgrade, and you have to guess (or calculate) how much gold (or resources) is actually needed;

Quick transfer of the entire possible army from the castle garrison to a guest hero and vice versa;

Make it possible to purchase an already upgraded creature in the summoning portal (in the Dungeon). Naturally, only if the unit is from the Dungeon and the corresponding building has already been built in the Dungeon;

Although, perhaps, some of these functions can be implemented in a quick menu (similar to F5 and SCM, but for the castle), which would include something like "Transfer all possible troops to a guest hero," "Transfer all possible troops to the castle garrison," "Upgrade all possible units in the castle garrison," "Upgrade all possible units of the guest hero"...