I would like the Demon Castle Wars comes to the 3DS, because it s a handheld, and IGAs handhelds are better than consoles ones. The main reason that I consider IGA must make 1999 game is that he state first the idea. We already know some of the plot, but not the Julius-Dracula final fight. Arikaido (Alucard) and Yoko (Shypha s descendant) appereance must be explain too. For that reason I think IGA should make the Demon Castle Wars game...
...But, with the new Lords of Shadow, new CV gamers and maybe the old ones, will probably get confused with the Demon Castle War plot. We will need to play again Aria of Sorrow and Dawn of Sorrow to understand, maybe, better. In the worst of the case, IGA will launch a 3DS version of both Aria and Dawn, before Demon Castle Wars (for merchadise purpouse, I believe).
But, if tradition is correct, we will have a portable Castlevania in 3DS. Will be the 1999 one? I dont care that much. I only want a new 2D (or 2.5D Castlevania game!!!!).