Well Murph, have you tried Erland's tools for custom browsing Multi-libraries? It allows you to create multiple virtual libraries and customize the fields to browse by things like Composer, works, conductor instead of being limited to the usual Artist and Title type browsing!

Here is a link with instructions on how to install the plug-ins and set them up specifically for classical music..

Setup Browse menus for Classical Music

With great power comes Awesome irresponsibility.