I have a bit under 300 sites/passwords stored in Key, and it's getting quite clumsy to use, especially in mobile.
Many of those websites/-services are ones that I'm not using anymore, but they don't allow removing user account or for some reason, I want to keep my account existing.
It could be great to be able to achieve those passwords so that they wouldn't appear in every view in Key.
I saw some people suggesting folders for passwords in LastPass-style. That wouldn't solve this issue, since especially in mobile, choosing login from list would be even slower with categories.