Joss wrote: Fonts, DPI scaling, drivers, games,
fonts are one of those issues
Fonts? Look pretty good by default in Linux Mint and LMDE2. On top of that you can even install the Microsoft fonts.
Drivers? Unless you have some really odd hardware, everything usually tends to work quite well on Linux Mint. And if something doesn't work, that's due to the manufacturers of hardware refusing to provide the devs with necessary information for writing a driver , thus it's not Linux that is to blame
Games? Look how many Steam games there are for Linux already. And the number is getting bigger every day.
About DPI scaling I don't really know. There might be some issues, but I personally haven't experienced any problem related to it so far.