I'd give Aadvantage a B+.
I particularly like:
- The ability to use SWUs on cheap fares and that the SWUs tend to clear,
- The ability to earn full mileage on cheap fares and then have that mileage doubled due to elite status,
- The sticker upgrade system,
- The ease of using miles with partners (BA in particular for me),
- The ability to earn lifetime status.
I think improvements could be made to:
- The preferred seating system - I would like to see the best seats being only available to PLT and EXP members until close to departure,
- Sticker upgrades should be available on LHR-BRU,
- FAs could be better informed (or motivated?) about elite status benefits such as free drinks and snacks on American Eagle flights for EXPs.