I am 6'5" and I feel that if I can fly without complaining about leg room, all you oompa loompas should be able to as well. ;)
I really feel for the folks 6'7" and over tho. I have just about an inch of slack when I sit down on a Delta flight, so I imagine beyond that would be pretty uncomfortable. Also, I resolved not to fly on Air Asia any more because they seem to leave a lot less room even than our Western LCC flights.