Customize Firefox Kiosk mode to activate its components one by one (à la carte)

Kiosk mode disables a lot of functions to maintain a certain level of security, and that's greatly appreciated! But this also implies that the navigation buttons or the tab list, for example, are not available. And in some situations this can be a problem. Let me explain; if the kiosk owner wants to block some keyboard keys or use this mode of Firefox on a hybrid pc, in tablet mode, with a custom visual keyboard that does not allow the use of keyboard shortcuts, the unavailability of some buttons, slows down the use of the browser. Will it be possible to customize the Firefox kiosk user interface in the future to prevent this kind of problem? Sincerly,