I would love to see TT instructions made on Glyphs not be lost when exporting to .ufo. Is this something possible with the current UFO 3 format?
It is not really possible (in a useful way) to store hints in an ufo. I could store it as private data, but that can’t be used anywhere.
I was just thinking on the possibilty of using Glyphs to do the hinting work and store data as ufo. Of course it will require to use Glyphs to build the font but would be really cool if fontmake can use this data too.
As soon as fontmake will be able to compile the hints, it can read the data from .glyphs file via glyphLib. So no reason to convert to .ufo now.