One thing I could suggest would be perhaps some sort of volume normalization or controls for the other audio aspects in Mala. You have a volume slider for background music and the jukebox, but nothing for say sound effects, the intro movie, or a video screen saver. I find everything is at a different volume level, and it gets a bit annoying when Mala sounds are fine but Mame is too quiet, or when Mame is fine but Mala is crazy loud.
Oh, and also a fix so Mala remembers what section of the options dialog you were looking at last.