Have you seen this?
https://www.chapmancycles.com/cantilevers/
The accompanying essay makes my brain hurt a bit, but I find the interactive tool to be very illuminating. For center pull brakes, if I understand what it's telling me, the only thing you really have any control over is the length of the straddle cable/height of the yoke, and once you get beyond a certain point, which I think most centerpull straddle cables exceed, even that isn't a factor.