Originally Posted by
le_goat
To prevent the stagnation at level 20,I propose that instead of adding more character levels you instead add different planes of existence. elemental,demon, holy or what not I don't know, I am not familiar with the eberron setting but in each plane you access you start from scratch. Not level wise but in the form of losing all the enhancements (what works here might not work there) all equipment , everything. Relying on your character and his abilities to start fresh.
I am not good at story and cannot come up with a reason to move through these planes, or how low or high one must go to reach the end. just an idea.