I would love to be able to assign subcategories. I am a web developer and need to keep login information for several sites for each of my clients (hosting, CMS, etc.). While I can create a category for each client, with 50+ clients it gets overwhelming in the left column. I am transitioning from the DomainBrain app for Mac (https://domainbrainapp.com/) which will no longer work once I upgrade to MacOS Catalina. DomainBrain was really great with keeping lots of different info for so many accounts. EnPass was the closest I could find but it doesn't have a convenient organization system.