Actually, Ground Freeze is a very powerful move that leads to a guaranteed 50/50 attempt and beats any wake-up, with the exception of U3.
The idea is to get a freeze, do some kind of launcher - I would highly suggest Ex-Rising Ice - and then do either B2 or B14 into Ground Freeze. Any wakeup option the opponent attempts, with the aforementioned exception of U3 will be beaten by the Freeze. The opponent can block whatever you do next, but you get to make them guess between overhead and low.
I will post a video here soon demonstrating how this move works. It might actually need to be nerfed and completely re-worked because it's a more potent version of the Sub-Zero S2/B32/B14 50/50 loop that everyone dreads the character for.