I upgraded my InDesign to CS6 and hoped that some things would get better. But not.
(Is that a good place to post feature requests?)
I hoped that the books (.indb) would be listed in recent opened documents. I usually work with books rather than single documents, therefore I would like to at least configure what kind of document will be listed in the menu or in the welcome screen. When working with a book I don't even want to be tempted to open a document outside it.
Also, I would expect that the books floating palette would not be obscured by the welcome screen upon opening a book. Even though I'm aware of this problem it's kind of weird and may be misleading for beginners.
Why don't you dock it into a workspace?
Docking of a book - just like docking of Swatches palette - does not work for me. When I quit InD and then relaunch it, the book is not there. I mean something like a bookmark-style behavior.
All I could do about it was by using pin feature in Windows 7.