I usually solve things with brute force, i.e. custom C++ code / Python script
But, that said:
I imported the fonts that are now in the library to Mikroelektronika GLCD font creator, tried to get the import as clean as possible by adjusting the import size, and then fixed by hand.
and in total honesty: it took me about 30-45 min max per font, during which time I also fine-tuned some of the character set to fit Pokitto use better
We can lament the missing “perfect tool” but in the same time I did my “google-hole” search-download font tool- test-convert rounds, I would have done the Pokitto fontset several times over in the GLCD font tool.
My advice for someone thinking about doing a font: download the tool and just do it. It takes way less effort than you think.