You could add :
-For a future version, the planet teleportation module and the "Define Orbit" ;
-And, much later, when you release "New Star System: Debdeb", you could give access to this system through a wormhole! We all hope so.
You could add, for new pieces of science:
-A Container of Whatever™ Mysterious;
-parts to build a space telescope;
-An "Inventory" tab like in KSP1;
-mechanical parts (pistons, hinges and all the rest) ;
-a scientific camera;
-And for the KAL 1000 controller,I suggest you add an "If/ else/ etc." function.