Apparently, San Francisco, in it’s several incarnations, offers various advanced typography features, and supposedly, the OS will automagically handle them in the most appropriate way (yay for tabular figures in clocks, we only waited for decades).

Speaking of figures, one such feature is the inclusion of alternative numerals with open counters: 

The problem is, they seem to be used only on Watch’s faces.

I would love to see them used on my Mac or iPhone when the numbers get very small. Better yet, wouldn’t it be nice to be able to set a preference, akin of that for font smoothing, to always use them under a given point size?

Maybe rolled out later on all systems?

Hope they also get discernible quotations marks someday, so the iOS symbol can be used again. 

Fixing the capital sharp s might never happen I’m afraid and I can’t even access the bug report to yell at them.