Frequently secrets are divided in categories forming a deep hierarchy.
Navigating through the secrets using a tree structurre would be very much welcome.
There are a few UIi alternaties but none of them works as expected.
Could this be implemented in future versions?
If you are not only interested in a feature for the ui, you could use hashifuse and the tree command. 
Thanks for the hint.
However, I am primarily interested in a feature for the UI.
+1 I think a tree UI would be a very useful addition and bring up the usability for operators that need to deal with a lot of static secrets.