Tim,
I don't have an image of the form, but I use Layer Filters defined in the Layer Data File to "sort" Layers in the Import Layer form. And yes, ObjectDBX is very powerful: I have Forms to import Views and Blocks, I have a form that pulls all our ADT stuff, styles etc, from a main ADT Data Drawing where all our styles are defined. That drawing is the defined ADT Standards drawing - so as I update / edit styles I use this tool to update a Project - and of course the next time a user starts drawing a wall (even if it's note already defined in the active drawing)they have the latest style definition instantly via ObjectDBX.
The nice thing about this type of program - management theory is A: the template drawing doesn't necessarily have to contain all Layers (Blocks, Views, ADT Styles, etc.) B: When used with AutoCAD's Standards tool it makes managing Office Standards a breeze, and C: the user decides what layers (s)he needs at any point in time - instead of inserting an entire drawing (one place I worked had over 700 standard layers!)