I am planning on buying a BIAB 2013 package with all the styles, or nearly all,
since it is much less costly than buying only the ones I want.

In 2011, I don't believe there is any way to remove or delete files from within
the style picker. Also, styles cannot be moved into a user category.
Is this correct?
Also, have any of these possibilities been added in 2013?

What I would like to do is move the styles I use into my own categories and remove
them from the main list. Also I want to delete the ones I don't use. The main list
then would then eventually become empty. If I added a new set of styles, I would
have only the new ones to look through and sort out.

Or is there another way to organize styles to basically do the same thing?