Well, let's go. A separate slot for weapons can be assigned in the interface where the clothes are currently located. Why a separate key? Well, for example, when you click, you can see the animation of getting the blade, a separate weapon model on the character. In case of immediate danger, while you are busy moving garbage from the inventory in the mine, you can immediately get a weapon, for example, repel the attack (For example, the F key).
Tool slot - repetition like a weapon - a separate animation and possible effects for the character, since such things are easier to control and load the computer less, since you do not have to check each item in your hand each time (for example, the R key).
The rest of the inventory - if you want to use the treatment, or you want to share an important item (transfer from character to character without throwing it on the ground) - press a separate button.
If you want to look into the inventory - spin the mouse wheel, mini-icons with translucent textures will prompt you on the screen what you want to take from the inventory.
If you want to see the whole old-fashioned way - press E (you can add an animation of opening or taking out your backpack with a stylized menu, for example, small cubes of objects placed on mini-shelves inside a three-dimensional backpack, while the character looks inside the backpack (cubic version, like in the sons of the forest) and click one time to place in hands). Player wants to know what in inventory in more useful view what depends on humans association type of memory.
At least player hadnt octopus hands to fast switch by keyboard on last slots. Wheel in case of hotbar useless to fast pick what you want and sometimes you scroll twice or triple cause you do it too fast.
This will also be compatible with realistic interfaces (settings - interface tab).
Every time I turn on this handy switch, my fingers start to ache from having to CONSTANTLY PRESS THE CONTROL SHIFT. CONSTANTLY CONFUSING ITEMS WHEN YOU WANT TO TRANSFER THEM TO HOTBAR IN A PACK by pressing shift + lkm. Painful