Hiya Proton Team!
Folders are the crux of everything we do on Drive. From organising our cherished memories, separating the important from the miscellaneous, to categorising documents. I think Folders in Drive need a facelift to help make them even more useful for users.

1. Favourite/Star Folders - Star any folder or subfolder to add it straight to the homepage for quick access
2. Pin to Top - Pin any subfolder to the top of its parent folder regardless of usual order, with the usual resuming when there are more than one pinned folder
3. Colours/Icons - Allow users to choose any picture or colour for their folder, for colour coordinators and visual people to really make their life easier
4. Tags - Allow users to select a tag either manually or provide 'suggested tags' for the type of content and file types so we can use natural language on a homepage search to find content of certain types more easily. The machine learning algorithm needed for this should either be handled encrypted client side or within the Drive itself, nothing should leave the Drive.
5. Locked Folders - Sometimes we just want a bit of extra privacy and security for our most important files. Lock a folder with a pin? Add a separate two-factor authentication layer? Or how about a 'displayed name' for when locked different to the Folder's actual name? Features that let us lock away important files and pictures in hidden away places with extra security.

Kind Regards!