Thank you, glad to hear you like it!
As for suggestion 1, I like to keep it a simulator first and foremost, that is, to not let it be too much of a "game". So I don't want it to be too forgiving, to avoid people learning bad habits. With that being said, of course it can be tuned to make it even more realistic, I will take a note of your suggestion.
2: For now, I like the simplicity of a single button. It's also kind of nice to see how much variation there can be from only 5 gates I think. It would certainly be possible to have an option for number of gates, maybe I will add that later.