A coarse rule of thumb is that each axis doubles the font size. So one that has just a weight axis is twice a normal font. One with a weight and width axis is f

A coarse rule of thumb is that each axis doubles the font size. So one that has just a weight axis is twice a normal font. One with a weight and width axis is four times. So if you actually use multiple instances from the design space, it's a win. This is only a rough guide, don't take it as gospel. I'm also researching ideas (radial basis function interpolation) to make it more sparse for larger numbers of dimensions.