The Constructive Theory of Information does help with existing theories in situations where there is no new physics involved. So for example, you can say that regardless of the fuel that the rocket uses, if you have this amount of fuel, you cannot reach more than a certain height. And similarly, when you have information being exchanged between systems like gravitational field and electromagnetic field and so on under quantum theory, only parts of the system are understood exactly. The rest on the medium that is transferring the force or whatever it is from one well-understood system to another well-understanding system isn't well understood.