I like the idea of _cap.xxx and _corner.xxx components – it is very elegant. But I miss a smart components usability. Is this a big deal to add some kind of interpolation functionality?
H stem is usually wider then N stem, and it would be great to have an ability to adjust _cap. component with a slider.
You can attach smart components using anchors. Also, I think in normal circumstances you only need two stem widths and don’t need to interpolate anything, do you?