Proton Mail currently supports labels and nested folders, which are very useful for organizing content. I would love to see this extended across the entire Proton ecosystem:

🔸 Proton Pass

Add support for labels and categories, to better organize entries.

Enable nested folders, such as "Work > Clients > Logins".

🔸 Proton Drive

Add labels and categories for files and folders, just like in Mail.

Introduce a way to create linked files or symbolic references:
For example, if I have file B in folder A and want it to appear in folder C as well, I should be able to create a link/alias instead of copying it.
This would allow managing a single file from multiple places.

Also, enable links between documents, to reference related content easily (e.g., a text file referencing another PDF stored elsewhere).

🔸 Proton Calendar

Support for custom labels or colored categories for events and calendars.

Possibly allow grouping or nested views (e.g., “Work > Projects > Deadlines”).

This unified and flexible organization system would dramatically improve the cross-app user experience and bring consistency and scalability to Proton’s excellent privacy-focused ecosystem.