I've had a think about it, and I think I've come up with a good compromise between not adding a lot of complexity while still making it easier for people splitting lots of new books.
In the attached version, instead of 'OK' and 'Cancel' buttons, there's now 'New Book' and 'Done'.
When you click 'New Book', it does all the same things it did before: create the book in the DB, prompt you for metadata edits, then create the new epub.
But it doesn't close the source book sections list. So you are already right where you were before and can select more sections for the next split.
Let me know what you think of this version.
Last edited by JimmXinu; 07-27-2012 at 12:55 PM.
Reason: Remove obsolete beta versions