This goes for ET and EE too. like transcending their transcendece and evolving their evolution.

Goes from 0 to a 100 real quick

I wonder if it would just speed up naturally as you develop more.

ET and EE aren't like this since they happen on their own you don't control them. This power is controlled so you can focus on what you want to develop.

they could eventually get around to doing it, with them being eternal and all that, or they could constantly evolve/transcend all aspects instead of focusing on one, which would include themselves.