For the keys with displacement significantly different from the average ((Q, A, Z, }], "', ?/ )) - is the displacement much more, or much less than average? I'm assuming the former, but I've been surprised before. I wonder if allowing the generative algo to adjust the thickness of the segments of "plate" around the edge of the alpha cluster would have an impact. You could almost certainly constrain the variable to not interfere with the switch, and keep it within the clearance between plate and pcb, and any CNC that can cut the existing shape shouldn't have trouble with a thickness gradient on the "plate".