I'd kill for a total annihilation one, but there's no chance in hell of that ever happening.

wouldn't mind an american mcgee's alice one, either (the two remix vinyl doesn't count)

I would like to see an arranged Chrono Cross album, but according to sources that is on the way so that does not count.

Perhaps a Xenogears Episode I arranged album would be good.

Althought the game's been out for a while, and it's sequal just released, I would be excited to hear some Soul Calibur 2 arrangements. Also, I'd like to hear some Warcraft 3 arrangements.

FF Tactics (the original PSX version). I can just imagine how awesome an orchestrated version of Altima the Perfect Body would sound.

Wishful thinking though...

I would also like to see an arranged version of KH

Not a soundtrack, but I would love to hear a DECENT version of Castlevania 1's "Wicked Child", the arranged version on Castlevania Chronicles completely ruined it, and the Orchestrated version kinda made it creepy.
The Dracula Battle album had an amazing arranged version of "Bloody Tears", I wish they would do that for "Wicked Child"

Streets of Rage 2, Tekken 2 or 3, and Wangan Midnight Maximum Tune 2 too

Ninja Gaiden (Master System) and Perfect Dark. Make em both Guitar remix albums and i'll be happy. No chance though.