Android, Chrome OS, and even Windows have switchable desktop and tablet modes. It can be triggered manually with a button on the taskbar or notification panel, or on laptop/tablet convertibles, by the act of physically switching between laptop and tablet configurations (detaching the keyboard cover, flipping the screen back, etc).

I personally really like this feature, because I actually use the tablet mode of my laptop/tablet hybrid often (which is why I bought a convertible instead of a regular laptop in the first place). But I do not want to use a proprietary OS just for this, and Plasma is my favoirite desktop environment.

I’m not really familiar with whether Plasma and Plasma mobile are even developed on the same platform under the hood, but would it ever be possible to be able to switch between them on the fly while preserving your open windows and active work? Like with desktop/tablet modes on operating systems that historically supported convertible devices? I know you can already switch between two different DE’s on Linux, but as far as I know, that involves logging out and back in, or at the very least, your open apps won’t be synced between them.