Maybe they're limited edition due to their cartage colors. Personally for me, a perfect limited edition HoD would be to have the music revamped cause they can do that now without sacrificing cartridge space (DS for example). And also to make a proper Juste Belmont sprite and sprite color palette. As for AoS the game itself with the music, graphics, etc. is all good no need for improvements there but they could do a proper translation of the story so that we north American fans are not so confused.
-X