Most fontdesign applications come with default values for the metrics, being
ascender: 800
capitals: 700
x-height: 500
descender: -200
As I see at school, most people don’t even think on the possibility to change these values, leading to a standardisation and no experimentation.
So wouldn’t it be a good idea to give the user on the creation of a new font a window that asks for these values? And I prefer to give this window the message ‘Enter the values corresponding to your sketches…’
As a newbie, I found the default values helpful. Altering them was actually the first thing I did when got started, but I don’t think I would have know what kinds of numbers to enter if left to my own devices.