I have an idea, cowpatz. How about you find yourself a Space Shuttle Simulator that is realistic and try doing your throttle adjustments and prove your point.
In the mean time I have to admit that there is a lot of AEROSPACE TECHNOLOGY coming from New Zealand and it is awesome. This includes:
AEROSPACE NAVIGATION (2 TYPES)
AEROSPACE POWERPLANT that can lift over a 1 Million tons
INTERGALACTIC POWERPLANT (2 types) Time to reach Alpha Centauri 25 minutes
ARTIFICIAL GRAVITY
AUTO PILOT DOCKING SYSTEM
The Space Shuttle actually uses one of those Navigation Systems that was thought up of in New Zealand. Ask an astronaut if their Artificial Horizon still works in Orbit? This is interesting since it does still work so then one might ask how?
A good addon for ISS might be some Artificial Gravity and some Apartments for the Astronauts up there.
None of this has anything to do with rocket lab either. They do not use that Navigation system. Rocket Lab could be using GPS and INS as a guess.