Until now, we've been using fonts optimized for the displays that were standard years ago. These classic fonts worked well enough, but not well per se. This has all changed now, as we've updated our font engine to use modern fonts, and the difference is significant: above, the new version; below, the old version.
The best part of the new font system is that it's font-agnostic; if we come across new fonts that we like better, we can just drop them into the game and they'll work. Here are some screenshots of the research and asset …