Currently the "tab order" when editing is:

"Header" -> "Main body" -> "Footer" -> "Edit summary" -> "Minor edit" -> "Watchlist" -> "Watchlist period" - > "Proofread status"

Watchlist and watchlist period are seldom used, but proofread status is used virtually every time we proofread some book. Changing the Proofread status widget to be before watchlist would mean two or three keystrokes less for every proofread page, making the process significantly better, considering proofreading a book may involve hundreds of pages.

Also, the picture should be closer to the main body, maybe before the header, so we can proofread with lesser mouse movement.