You're saying nothing concrete in particular.
What rules? How do they inhibit change?
The only thing I can think of which is actually difficult to change is the echr and i see more than a dozen mostly liberal governments queueing up to change it (to little effect so far) over migration issues.
There are rules about election conduct and free operation of courts, to give two examples. Both of which Hungary skirts on occasion but the EU does apply some pressure.
