On a more serious note, I am quite interested in helping work on this. Although I have never really used Arch before, but i'll give it a shot :D I'm just downloading now!
@harusp3x i'm not planning on making this a full piplay thing, sorry. but since i kind of like this build and i'm fooling around with it when i'm willing to give it some time, i may upload another disk image for those interested one of these days.
notable «progress»: - added default config for 2 (xbox 360) controllers for mame4all, pisnes, fba (on top of picade conf). - got a(n almost cleanly) working kodi/xbmc menu item ^^ - fully working yaourt (pacman wrapper that seriously helps install packages from Arch User Repository).