Instead of focusing on the last used window, clicking on an application with more than one window would bring up the overview mode, restricted to the application. This is discoverable, In two clicks the user has access to their documents and has a good view of which documents are opened (instead of just listing the titles). The problem is one more click and the mouse has to travel a bit, and always shows even when the user actually wants the last focused window. But this would be most exceptional anyway as most applications use a single-window / tabbed interface, only a select few (evince, empathy, libreoffice) don't.
What do you think of my initial proposition?
Instead of focusing on the last used window, clicking on an application with more than one window would bring up the overview mode, restricted to the application. This is discoverable, In two clicks the user has access to their documents and has a good view of which documents are opened (instead of just listing the titles). The problem is one more click and the mouse has to travel a bit, and always shows even when the user actually wants the last focused window. But this would be most exceptional anyway as most applications use a single-window / tabbed interface, only a select few (evince, empathy, libreoffice) don't.