Thank you for your careful review and feedback for the different mechanics of the game!
The instructions in general are definitely a little lacking. The rocket being able to be launched whenever you feel like is a known bug though at least it is a humourous bug to see a rocket launched with different disparate pieces.
I did have other construction mechanics in mind but ultimately could not flesh them out.
You are correct that the art is not cohesive as I took freely available assets from different places to piece the game together.
As to the story, if you are interested I can explain it to you on Discord privately. I think with more art and story lines this would be conveyed more clearly. Thank you for that feedback!