I have a few suggestions for MK3 - A full color display with better resolution (and a software update that accepts 3rd party visual plug-ins, such as G-Force - http://55ware.audiogalaxy.com/ ) This would also require a processor updgrade so that there would still be 70% free for future upgrades. Might be useful to have some more RAM for that stuff as well.
Another idea is a high powered, directional, built-in microphone for use with the speech recognition search ability.
Also, still waiting for the Mac version of Empeg software to be released. Hope it is soon.
any feedback posted would be appreciated.