My thread you link through to is really just pseudo-3D in Pulp, the much more basic alternative to the full SDK - this here is a lot more impressive! (You might be more interested in seeing this lit raycaster demo which might give you some ideas about shading at distance? I found it pretty mind-blowing!)
I kind of think you could do some interesting things with the black/white barcode effect you have though. If you broke up the vertical lines and had them cascade down it might make a kind of matrix-y effect, that could be cool.
What algorithms are you using for maze generation and solving? I spent a little time learning about the different options for my project, but Pulp not supporting arrays limited my options so I only implemented binary tree and Aldous-Broder (sort-of) 
You have a lot more freedom with the SDK of course!