I've got a blu+ and i don't need to overclock more than 144mhz in drmd all of the other emus work fine at 133mhz. Although if he wants to play dune on drmd then you may what to get a gp32 that can overclock to 156mhz+. Because dune runs at about 6-12fps at 144mhz.
yeah big rpg projects like this do need a PC editor and no rpg is complete without sound.
If we did get the source a mod player could be added to it to give us sound although I don't know weather this would be possible because I don't code.
The version out now is good enough to make a rpg just there's no sound. If we could get the source maybe someone would be willing to continue it.
There's some tilesets and sprites here and the tutorial's here
Maybe you could start it back up again using gigas. Have 7 people each make an island then put them altogether to form the game. Then anyone could have a go because there's no coding involved.
(edit) there'd need to be more than 7 people maybe 10 for the boss battles. Also is there a pc map...