Besides do you think it is jun if you just build the airports, build the planes, and then wait? no thinking/transferring/strategy needed for a good game?
if we talk about fun it's really personal,
" long games, short games, easy games, hard games, competition games, offline games, "
for me build city is harder then build industry, so can i call this good game? yup it's personal
plane crash is OK, but please reduce the goal to create ideal game" small city = small goal
it's hard to maintain crash planes