More suggestions -
Quit this race to the bottom on frequent flyer program qualification levels. Just go back to MILES ridden. Sorry, I won't say FLOWN, I'm not a pilot on your airline, so I don't fly, I ride.
Board bags for flights. I had a trip last month were I was in Europe for over 2 weeks and didn't see my bag the whole trip because it NEVER LEFT SEATTLE in the first place. And now LH is on the hook for clothes I bought in Europe because they flew the last leg, even though the problem started with your people not putting the bag on my flight from SEA to SFO in the first place.
The food quality is going downhill in all classes. Fix that!