This is awesome stuff. If you fullscreened MobaXTerm and autohide the Windows taskbar then what are the problematic points vs running a linux/i3wm natively? Do certain keystrokes get intercepts by Windows regardless? You mention Firefox have you tried Chrome/Chromium in i3wm? Can you play a HTML5 youtube video?
Thanks for writing it up, interesting stuff! - An i3 user
Thanks for writing it up, interesting stuff! - An i3 user