Not a ton has changed for the better - but a few things have:
1. Ticket prices have come down in real terms (especially with the advent of low cost airlines)
2. Fuel economy on newer jets has improved
3. Increased number of routes and frequencies
4. Lie flat seats in business and above on long haul
5. WiFi on planes
6. In-flight entertainment - both seatback units and video over WiFi
