The newest version of "Dances with Lixes" doesn't have any resemblance to "100% Built"/"Ascending" -- that was the point of trying to enforce my solution. Actually, now seeing your solutions makes me like this version even more, it means there are a couple of variations in the same spirit of my intended solution (which is still slightly different, but closest to A). It's possible to save one builder, but the additional builder doesn't add backroutes IMO so I'll leave it.
"Trading" is exactly as intended, there are two positions where you can assign the digger, and I seem to have a success rate of 90% with that, but I made the pillars thinner to make it easier now.
When I compile a beta version of the pack, which version of "Won't get fooled again" should I include? (It can still be changed later.)