Able to play All types of Music
All types of Videos
All Homebrew Playable
All isos/burned games playable from HDD or Disc
A place like Playstation HOME where we can bring our Miis to hang out, play games, chat, and whatever else.
Region changing and Japanese language changing would be nice even though Japanese is a bit pointless for me, it does look nice.
Customizable colors and messege board background.
Custom idling sound. (plus off switch, man do I get tired of that noise)
Nunchuck and Gamecube controller support.
Differnt channel layouts.
Random online features like an RSS ticker.
Pretty much stuff we could do with homebrew firmware though Im hoping we'll see a mini linux OS GUI someday.
Though for right now I see small Firmware hacks in the near or not too distant future. Just getting rid of that dang idle noise would be great. Color changing too if it were easy enough. I get tired of light gray.
Can't find any threads about this particular issue on GBAtemp or the wider intarwebz. Saw one video on YouTube that seemed relevant, but it was some dude with the same issue, no solutions offered in the comments. :/