The theoretical ideal is that judges won't be intervened by anyone. (At least that's how it is phrased in my country). Congress thus has to select trustworthy judges, and is supposed to be able to write and block laws without going to the court. These two not being met are the problems that need to be fixed, in the classical sense. Now, if you say these are beyond fixing and the other governmental branches have to start checking the court, there'll probably arise a huge problem of how to establish the independence of judges.
Basically they will be officially political tools.