As I entered the second semester of my year long grad project, I looked back where I left off from Prototype #3. There were some issues I know I had to deal with:
1) I was not totally satisfied with the aesthetics. Because I decided to encase each mechanical axis into its individual box, the boxes ended up being large in which the outside frames had to be bulky as well. I couldn't minimize the frame size into a sleek compact form.
2) There were too many boxes. I had to simplify the box designs to simplify (in a "what if" scenario) and reduce the costs of production. Which means I should use only a single box design for all axis. Also mounting holes had to be universal, so any box would be able to fit any other box in any direction.