I just thinking about armors and things above onyx. I know that more defense really can't be added.
What if, after 85% defense, it takes off of their defense?
So let's say you had 90% technically. That would take off 5% of the defenders defense making you hit harder on them. These numbers would be determined before each battle so it wouldn't make the defender's defense under 85%, incase it was, and then they wouldn't take off of your defense.
This might help in adding more armors?