Admittedly, not a priority... but a nice to have.
As a system admin, I have a couple of accounts set up for testing based on different access rights. Currently I manage this by running Edge under separate accounts which works OK.
It would be nice to have either the ability within the desktop app to switch accounts (without having to log out and log back in)... or better yet, when multiple windows are open, the ability to have each window signed to a different account to allow for side by side testing.