I use the copy to clipboard function a LOT. I have also customized the Main Toolbar so that I can click the button to make that copy.
What I would love to see is a Main Toolbar button to execute an Autotype for just the Username (similar to the existing copy username button) and another button to Autotype just the Password. In the Autotype setup for each entry you could add two boxes where the user could customize how the action would occur (like adding a Tab and then an Enter) or leave it blank and it would Autotype only the Username with no other action.
Forgive me if I have missed this ability - I just upgraded from version 3.26 to 3.28.