Great minds think alike - IMO, the inventory interface is the weakest aspect of the game, especially as it's so pervasive. I've been asking for many of the same fixes/improvements for months, as well as others - check out the list of requests I and other folks have been working on (link below) and see what you think. I doubt some of the more complex requests will be implemented officially at this point, but there are some very basic and frequently requested improvements that should be good for the upcoming official patches, while for the rest, we always have modders to clean things up.

http://www.larian.com/forums/ubbthreads.php?ubb=showflat&Main=42728&Number=510720#Post510720