You know what needs to be done now? THIS!!!
(The middle layer is turned 45 like a Fishers)
I thought about doing that one first, but then I realized that other than shape, it is exactly the same as a regular Rubik's Cube (when the layers are aligned). I chose the aligned version because it added center orientation for the middle layer, and eliminated edge orientation for the middle layer. I always like to add something different in my mods, but the alternate twist cube is still a very interesting idea, and only two additional parts...
The twist cubie was just a silly idea of mine, I enjoy seeing one built.