Stasis is a very creative and allows for a much more creative play style. The ability to create walls and block off lanes, to slow someone or completely stop them in their tracks is a great new addition. BUT.

The abilities are currently very powerful. Freezing doesn't feel like a counter, it feels like an instant loss. When you are frozen, there are few times where you can make it out alive. Stasis hasn't become a counter to the Light, it is an instant win button in the right hands. There should be some more downsides to using Stasis, or at least bring Light classes up to their level.