1) the option for searches (when adding movies) to be sorted by "closest match." That way, a search for Go would return that exact match first.
2) an option for "media" type to remember the last selection. That way, if you input a long series of DVD-Rs, you don't have to keep switching to the Advanced tab and modifing that field
3) an option to limit searches to certain regions. I don't own any movies from outside region 1, so it would help if search results didn't include other regions.