Hotkey label for all toolbar slots

Hotkey label for all toolbar slots
This idea/suggestion is Open. You can respond to ask questions or discuss the idea and either vote it up or down if you believe it should or should not be implemented, respectively. Popular suggestions and ideas will be considered by the development team to become reality in-game.
Proposal
Add an option to show all the respective hotkeys for every row of the toolbar, see attached image for a bad mockup of what it would look like.

VZ8PKaH.png
Justification
This is a pure QOL change and it being enabled as an option means it would not affect players who do not want to use it for whatever reason.
Motivation
Currently if you wanted to use a weird hotkey layout to take advantage of the unused keys around WASD it would be very difficult to know which toolbar slot corresponds to which key, due to only the first row being labelled.
I don't know how much work a change like this would take but it would be much appreciated especially if we are also getting a 3rd toolbar slot as proposed in another thread.