Nice work. I'm still on the fence regarding whether I should mod my WitEden Super 3x3x3 or keep it as-is. A few years back, I made a lazy man's 3x3x5 cuboid by combining the parts from a Cube4You brand 3x3x4 and cubic 3x3x5. Turning is decent, but the inner slice layers look like square pancakes.
Which I love. My lazy mans 3x3x5 was one of my favorite puzzles. It broke when I moved, though.