1. Lack of availability at standard levels.
2. Last minute fees.
3. Online booking tools that can't handle advanced search or open jaw travel.
4. Inability to see reward booking class by segment.
5. Elimination of 20K awards.
6. Saturday night stay requirements.
7. Extortionist international upgrade charges and draconian booking policies.
8. Difficulty lining up interline segments.
9. Reduced bonus segment/mile opportunities.
10. Low fare mileage earning restrictions.