3. Semi-Sorted into groups, and always moved drills to the top of the group (so a person searching top-to-bottom finds the drill first): https://s3.kuschku.de/public/03_sorted.PNG
The result is done with 3 lines of CSS, and an additional class on each link. Tiny change, costs you a single-digit dollar amount to implement, and can be so much more effective.
Make all tests blue, all real alerts red. A tiny and simple change, but makes such a difference.
EDIT: I decided to create a mockup with only tiny changes:
1. the current version https://s3.kuschku.de/public/01_current.PNG
2. Color-coding added https://s3.kuschku.de/public/02_colors.PNG - already a significant change, with only one line of CSS
3. Semi-Sorted into groups, and always moved drills to the top of the group (so a person searching top-to-bottom finds the drill first): https://s3.kuschku.de/public/03_sorted.PNG
The result is done with 3 lines of CSS, and an additional class on each link. Tiny change, costs you a single-digit dollar amount to implement, and can be so much more effective.