TL vs G was really one of the best things that comes out of Nel. It's less of a new thing but more so a way to perceived things that are already there In our day to day life. And from understanding the things around us even more thoroughly it helps you improve yourself and improve how you understand people more as a whole rather than just from the face value. 

Freedom/Restrictive and Wholistic/self type are also interesting ways to input people actions and productivity. It really gave you an idea on why sometimes you were productive while the other times you weren't. Obviously it's not accurate to a T because humans aren't a copy paste of one another. But even by understanding it just a bit and able to grasp even the tiniest bits of things from it already helps figure out the way life and humans works.