About under- and overshoot:
for under- and overshoot is it better to have the same values (eg. baseline -16, x-height +16)?
for uppercase and lowercase is it better to have the same undershoot values? Because in some fonts I have found for example that the uppercase is 0 / -16 and the lowercase 0 / -12. Could this result in an apparent imperfect horizontal alignment?
For ascenders isn't a tighter overshoot enough?
In general, is there a way to calculate the under- and overshoot in an absolute sense? I mean: how to decide if the most appropriate value for a given font is 12, or 14, or even 16, etc.?