This mod lets you back up your keybinds, so if you change them, you can load them back in with a command.
/keybind save (name) - Saves your keybinds under that name
/keybind load (name) - Loads the keybinds under that name
As a PvP player, I have to change my keybinds per kit, so I can benefit from hotbar priority. Here's a video explaining it:
<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/RVmQnDtNxKo" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe> This mod is allowed in Competitive fights, unlike hotbar priority changers. Now, I can just use my muscle memory.