8 hours and 9 pages of scribbles later, I've finally worked out the last of the kinks on this 8 rate solution, and I'm very proud of it. This is the first time I'm trying anything like this. I found I could only just barely get all the atoms to where they needed to be without collision. Aiming for 8 rate meant that there was very little allowance for atoms to pause to make way for each other. Arms 10-12 were the hardest to figure out: they have to do double duty moving both vitae and water, because I ran out of space to give them dedicated track loops. It works out that those arms have to make 3 distinct atom movements every 2 times round the track.

There's no cost optimization to be seen here, apart from a general effort to try to keep things close to each other. I'm curious whether using more glyphs would have led to a reduction in the amount of track or arms I needed.