Currently its only possible to choose one fallback font from a predefined list.
Would be awesome to choose multiple fallbacks and prioritise them.
Also, it would be great to add custom font names to the list, f. e. Helvetica. Because I don't want to have in first place an Arial as a fallback if the user maybe has a Helvetica on his device.
This is called a font stack and it's so basic, I can't believe they don't have it. I'ma flip this table if I see another one of my sans serifs come out Times New Roman. Maybe don't default to a font from a hundred years ago.