There's this entry in the TODO list:
  • Morph game/machine favorites, play-history and search results into tree-widgets (like the game/machine list views) and let the user categorize his/her favorites freely
However, there's no real plan to support those folder-ini's... but I will have a look when I get to it. There are more pressing things right now, though, in particular the Qt 5 support for QMC2 Arcade will need more time to complete (though it basically works now), and I plan to port all Phonon features to QtMultimedia or even QML for Qt 5 in the near future. Free time is a rare resource though smile.

A mind is like a parachute. It doesn't work unless it's open. [Frank Zappa]