There is something that is kind of wrong in the game : the go-arounds and the weather.
I think we should change it a little bit because in real life as soon as there is an aircraft on the runway the aircraft goes around but it's not the case for example at GCLP(giving also the amount of traffic we get when you're at the maximum level of 90).
The 2nd thing is the weather, most of the time when the weather is that bad the game forbids pushbacks and takeoffs but not landings ? They should hold aswell.
So thinking about that, maybe it's also time to add a command of rejected takeoff...