Back to 4.5 or preview pane below result list

Is there any way to go back to desktop version 4.5? (Or add a preview pane below the results list?

I love the new look, but the feature I used the most was rapidly previewing docs - now I have to move between pages rather than just clicking the next document to preview - slows down the process.

Also, can you add the icons back to the Source list? It is easier to tell the sources apart by icon than by text.