I'm interested to know if anyone with a decent amount of experience with this technique can vouch for the linear formula? It would certainly be great if that is an ideal formula. I'm curious to know if a slight curve in the formula would in any case be more optimal / natural?

The reason I ask is because I've implemented similar techniques in projects before, and from experience I ran into a few situations where (for example) text would wrap at undesirable locations (such as titles / headings) during the transition while I would resize the window's width. So if anything it may be interesting to extrapolate this technique so that the derivative of the function is slightly smaller on the small end of the spectrum, and slightly larger on the big end. Or maybe a shape similar to a sigmoid function?