What happens when you feel that the system you're following currently doesn't work in your organ practice?
What do you do when you're no longer satisfied to copy someone's style in improvisation or composition?
You break the rules, right?
You change how you practice here and there. You produce forbidden intervals and chords when you create.
But I think you can go even further.
You can develop your own rules.
You can come up with a new set of modes or rhythmic ideas for your compositions or improvisations.
You can figure out a better and more efficient way to learn or memorize the piece.
Then you can teach your system to someone else.
If your idea is remarkable, it might even catch fire and spread.
It's OK to follow the rules. As long as you're the one who's inventing them.