Honestly I can't decide on what songs I want to see long versions of, or who I want to see remix what, but I can figure out who could be the remixers, in this case...
kors k
Ryu*
L.E.D.
Sota
TAKA
(beatnation artists gotta remix in their albums :P)
Tomosuke (They're like, best friends xD)
Naoki (Because he discovered him in the first place)
wac (Since he was on both anyway)
Des-ROW (Since he scratched for them)
Tatsh (Since they both debuted as Producers on IIDX RED)
RAM (What, a guy can dream
)