Hello, these logos look really fine.
I posted a few ones a long time ago :
http://www.gp32x.de/board/index.php?/topic/46705-wifi-bt-sd1-and-sd2-activity-logos
I finally give you a few versions of the icons, I changed a little bit the Bluetooth one, I can change it again, but I really don't have a lot of time.
PNG Fireworks
Adobe Illustrator
Adobe Photoshop
Why wouldn't there be two Fn positions ? L or R like said kin, and there would be 4 possibilities for any key, and always the two thumbs free to make more complicated combinations.
Tell me if that would viable.