It would be really neat if there were some more options to handle book series and the display from within iBooks. The mapping of the series to the Genre field that makes it appear as a Category in iBooks is really nice.
But it would be nice if there was some way to sequence them.
It would be neat, I think, if the book title (iTunes->Get Info->Info->Name) could optionally have " - Book n of m" appended if the book is part of a series in Calibre.
Incredible would be if there was a way for us to define/override the mapping ourselves using python somehow from within Calibre (like Advanced->Tweaks).
Great iPad integration nevertheless
