Use unequal "optical" note spacing
This has been an issue for awhile for me, and I don't think it would be too difficult to fix. Whenever stems are next to each other, and going in opposite directions, the first stem up, the second down, they are spaced too closely. See the attached screen shot to see what I mean. This can be a real problem too with grace notes (stem up), and the following note (stem down) — though this is not illustrated on attachment. The default spacing is used, in Gonville.
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