I believe the simplest solutions are generally the best. So with regard to a main UI that supports rotations, I would suggest something like this: - No portrait mode homescreens. Rather make the phone app the portrait mode "homescreen". This would retain the current (optional) "rotate while on homescreen to launch phone" mechanic. The current phone UI option for launching the phone by turning could be replaced with a general setting to enable rotation of the desktop and dashboard. - The dashboard is a tricky thing, especially with a mix of portrait mode and landscape windows. A simple solution could be to use a "card-view" as on the pre, which only shows one full preview and two partial ones on each side (to be swiped). This wouldn't be nearly as useful as the landscape dashboard, but it would work well for one-handed task-switching. The question remains, how to display landscape applications in a portrait mode dashboard? It's not as simple as to display a rotated image, keep in mind that portrait and landscape UIs have different titlebar locations, which don't show up on the thumbnails. Perhaps the "card-view" could actually display landscape windows in landscape orientation. It would look slightly chaotic, but it shouldn't be too bad actually. P.S.: A big problem remains: What happens if you rotate the screen while on the dashboard? Do you wait until all applications have acquired their new orientation? This could take considerable time, but otherwise you would get broken thumbnails (at least on the landscape dashboard, which doesn't have a proper way to display portrait thumbnails).