A recent Steam update changed the way demos are handled, and it makes it so you can either download a demo from the store page, or add it to the library, for later installation.

The thing is, after you install a demo (even if you click to add it to your library, and install from there), and then uninstall it, the demo is fully gone from your library, and from the licenses page (the license is fully removed from your account), and can only be installed again if one goes back to the demo page, and install it again.
That is, if the demo isn't removed from Steam in the meantime, in which case you are out of luck.

This may seem unimportant, but various demos on Steam are actually standalone titles or prequel chapters, and if one can't re-install them and they are removed from the store, these titles/content will be lost.

A few random examples:
-the Voice of Cards: The Isle Dragon Roars "demo" is actually a prequel story, set before the main game, a completely independent small story;
-the Danganronpa V3: Killing Harmony Demo Ver. actually has a different story, and unlocks stuff in the full game;
-the Read Only Memories: NEURODIVER Pilot Memory "Demo" is actually a prequel story, that takes place before the main game.

These examples and more makes some of the existing demos worth playing and revisiting, even if you own the full games, and it would be great to have a way to keep them in our accounts.

May I suggest, for example, that when you uninstall a demo, you don't lose the license to it (which would keep it in your library, for future re-installation), since there's already an option to remove it from your library/account?
Or, that a prompt may be added that, when you uninstall a demo, it asks the user if you also want to remove the license from your library/account, or not?

Hopefully this is something that can be considered.
I know people don't like having demos "cluttering" their libraries, since indeed in some cases it's just small bits from the full game, and mostly useless when you buy the full game, but for these "special" cases where the demos are actually standalone titles, prequel chapters, or feature exclusive content and/or unlockables for the full game, it would be great to be able to add them to our accounts, and keep them, if a users wishes to do so.

thank you