Remove keyboard shortcuts that don't apply to the current OS or if that can't be done, then specify which OS is using which shortcut and make the repeated commands collapsible.

add more shortcut groups such as github. perhaps add all keyboard shortcuts

Separate custom keymaps by OS. E.g. in the custom section, it should show blocks of shortcuts for each OS. Also separate by feature/package within each of the OS blocks. If this has already been done in a certain way, make it easier to understand visually. Also, improve the docs so that the instructions for using this package are clearer. Inform the users about what each of the keymap-display package does (tooltips on hover?).

Add a clickable Close button on the top right corner of the panel. Or, show the keyboard shortcut to close the panel on the panel.

improve the search. e.g. 'open file' would be able to find 'open-file'.

Click shortcut group button to show the respective group.

Try to allow scroll up/down to be done using the keyboard.

type text to shortcuts

e.g. ctrl-! is actually ctrl-shift-1. Detect these types of shortcuts and place both methods: ctrl-! (ctrl-shift-1).