2014- that sounds like a pretty slick idea.
Anything to save time or at least some wear-n-tear on the skeleton! I've been using one continuous piece of belting as a template that is placed on top of the other track belts so that the 1st and last crossers (and of course everything in between) falls exactly in the same place to keep it perfectly square. Sometimes the belting you get isn't perfect (doesn't matter as it gets trimmed/beveled on the inside anway). As you can imagine, you definitely need to use some sort of full-length "template" method (at least to mark the belting) prior to drilling. It would be nice to punch 2 holes at a time in one quick whack. The template method works great. It you don't do this, it's amazing how even small differences in measuring can really add up from one end of the track to the other...lets say if you measure for a handful of crossers, then jump forward and measure again starting from where you last left off. Things can get out of square pretty quick at any point in the track... and trying to cheat one belt back or forth a bit can mess up other crossers down the line. I like to use a nice flat surface long enough to lay the entire track length out and mark with the template. Same template for all (4) pieces. I think a full-length angled table would work swell with a piece of angle at the bottom (full-length) to hold the belts in a good ergonomic position. Would be better than crawling around on a cement floor!
I look forward to seeing some more of your videos! I'd love to see your machine conquer some slush.