I'd also love Mint ... But
I have installed Crouton Unity on my Samsung (ARM), and not only does it support the Internet, but with some additional configs, you can bring it closer to a full Ubuntu install. There are things that don't work (like Software Center), but I can live with that. My goal was to be able to use the Chromebook offline for some basic Office tasks, which I can do now (LibreOffice). I suspect in time, better support will evolve too.