System fonts

perhaps this should live in Wish List but figure theres prob a way of circumventing this with alterations to the header or something for now…

hot topic of the moment… ability to ditch web fonts for system fonts: Implementing system fonts on Booking.com — A lesson learned. | by Stuart Frisby | Booking.com — UX Design

essentially:

body { 
  font-family: -apple-system, BlinkMacSystemFont, “Segoe UI”, Roboto, Helvetica, Arial, sans-serif;
}

presumably this isnt something that can be served from the font interface, would need to be custom css inserted in header?