You should get loads out thos topics:
1 - How LCC have changed industry in terms of routes l and cost
2 - How full service are adapting to take them on and how many have gone bankrupt
3 - Airlines want world class airports but not prepared to foot the bill. Also a bit about how the UK cannot or will not deliver a solution to some problems but splash out millions putting it on the long finger.
5,000 will look like nothing once you are started.