This free font from Mozilla looks great: https://mozilla.github.io/Fira/ https://github.com/mozilla/Fira We should bundle it in LO.
Why?
Closing due to OP’s inactivity. For the record, we are not generally taking suggestions to add even more fonts to LibreOffice due to package size concerns. And in this particular case, this font family does not provide a substantial improvement to LibreOffice (such as more character coverage or interoperability enhancements) which would justify bundling it at the expense of increasing the package size.