I've been doing a lot of cleanup of certain modules at the office. Two in particular are heavily used apps that incorporate pre-made default views with screens to add nodes or do information lookups.
Part of the problem with this is that although I had a decent URL structure (many paths were aliased), my breadcrumbs were never right. I usually had to override them to make them work the way I wanted to (Drupal 5 on my end):
This is a hack!