Hi,
Would it be possible that if you have multiple logins for a site like for example GMail when you press the auto fill hotkeys you are prompted for the login you want to use rather than it using the last used/first one. Clicking the badge icon is ok but is slower than a pop up would be.
I use the shortcut ctrl-shift-y and then the tab key to switch between the different entries instead of using the mouse and going all the way to the badge icon. This is essentially be the same as what you are requesting.