My dream is to have a single nice variable font available pre-installed across all major desktop and mobile platforms that I can use without downloading custom fonts and suffering through additional font loading latency or layout shift.<p>In the mean time, I'm using the system font stack popularized by Bootstrap's reboot.css reset. It works great for eliminating font loading latency and layout shift, but AFAIK none of the fonts in there are variable, and they all render slightly differently in terms of font weight specified vs actual visual weight, which has been making life difficult.<p>This is a step in the right direction though, at least soon we'll have a variable font for one mobile platform in the system font stack, though I'm unsure yet how to take advantage of this since I'm not sure if there's a way to determine if the font we end up loading in the stack is actually variable.