I've been to three airports. London Stansted, Leeds (also GB) and our Czech one, of course, and I must say that ours is the best from them. There are nice places to spend time while waiting even before passport control and a lot of seats. In Stansted, we had to sit on heating. The only seats were for disabled people, and there was max. five people sitting on them. Other +/- 15 seats were empty all the time.
Wasn't there a lot of people in Japan? Maybe we'll go there once. It's my fiancé's dream.