The Dactyl is definitely neat. It's designed for a different use case tho; you wouldn't take a Dactyl with you when you're out and about, while the Atreus is specifically designed for travel.
It's still a work-in-progress, but being able to tweak the input parameters and recompile to get the board regenerated is really handy! The circuit board already uses programmatic alignment for placing the switches and diodes: https://github.com/technomancy/atreus/blob/master/atreus.rkt
I'm working on a similar programmatic definition of the Atreus here: https://icosahedron.website/@technomancy/101809590723531930
It's still a work-in-progress, but being able to tweak the input parameters and recompile to get the board regenerated is really handy! The circuit board already uses programmatic alignment for placing the switches and diodes: https://github.com/technomancy/atreus/blob/master/atreus.rkt