There's an interesting base here, with some kind of upgrade or another active system to do at the same time it could be really interesting.
The main issues are that crashes can be unavoidable if 2 ships try to land at the same time (maybe they can swerve a bit to give some room) and the audio was quite loud and needs to come alongside visual indicators to make it clearer.
I also think being able to interact with the countdown in someway would help fit the theme.