while we're on the topic of global features: GBA loading (Fast vs Slow), since almost all my gba games need to be slow-loaded in order to allow saving.
PS: g6team, take a look at this neat little feature the cyclo has: in-game text reader. it may sound frivolous or unnecessary, but many gamers (especially perfectionists/completionists) like to use walkthroughs for their games to make sure they don't miss anything. being able to toggle back and forth between your game and your walkthrough without being bound to your PC would probably put the m3 devices back into contention for best slot-1 device.
or at least it'd make this M3 Real owner very happy.