Congratulations with finishing a game!
It became boring after 76 astronauts or maybe earlier.
At the very beginning, it seemed to me that the mini-game with loading astronauts into a rocket was just the first stage. That the second stage will be on another planet and there will be another mini-game, for example you need to pull astronauts out of the rocket and place them in their workplaces on the lunar base.
But in the end, it’s just the same mini-game in different locations, the mini-game itself is not very interesting and shows itself well as part of some story or set of mini-games, or some kind of development of the difficulty curve is needed - more astronauts, less time, fires on the rocket that need to be extinguished with taps or something like that.