Originally this was just going to be for returning auto-serifed behavior to Greek Lower Digamma/Heta to save a handful of glyphs, but I extended the scope to improve variant selection for forced-single-storey a and g to facilitate #2552 so that one of its single-storey g-derived characters doesn't show duplicate variants once its auto-serifed variants are exposed in the specimen.
Showing all a variants as an example:
sans before:
sans after (in particular look at cv36-02/07):
slab before:
slab after (effectively unchanged):
To show g variants in the same way would not show an obvious difference except for in the variant atlas in the release build, so I'll spare you the images for bandwidth reasons.
Originally this was just going to be for returning auto-serifed behavior to Greek Lower Digamma/Heta to save a handful of glyphs, but I extended the scope to improve variant selection for forced-single-storey
aandgto facilitate #2552 so that one of its single-storeyg-derived characters doesn't show duplicate variants once its auto-serifed variants are exposed in the specimen.Showing all
sans after (in particular look at 
slab before:
slab after (effectively unchanged):
avariants as an example: sans before:cv36-02/07):To show
gvariants in the same way would not show an obvious difference except for in the variant atlas in the release build, so I'll spare you the images for bandwidth reasons.