After taking a break from prototyping, I have had a chance to step back and reflect on the adjustable leg addition to the project.

Pros: 
1. smaller size modules
2.more adjustment possibilities
3.easier to add wheels or feet without interfering with track
4. track doesn't need to be confined to the outside corners of module

Cons:
1. heavier modules
2.more complication adds to cost of modules

Over all, I really liked the idea of the additional legs, however, in the end I believe to keep the price down, a simpler approach will prevail.  The important thing is the height measurement of each of the modules is critical to maintain a comfortable work height.   

As I began to assemble this last prototype, I was most certain this would be the look of the final module.  Sure, maybe a few final tweaks, but not a whole sale exit from the prototyping process.  It's true, I have concluded, all can be better  displayed via google sketchup.  

It's the little things that excite.  My own QR code.

German company www.goQR.me will insert a logo into a QR code for 80 dollars - generating a code is free without logo.