[quote name='Sarang01']I've seen the video of "Vampire's Rain" and it looks disappointing to me. On the other hand I'm sure ANY of the games I've mentioned, while they have typical gameplay, it's solid for a S-RPG, if not enjoyable for some while I question the enjoyability of this game.[/QUOTE]
Yeah, but we're not talking about the quality of these games, as examples of their respective genres. What we're talking about their marketability to American audiences. You could have, for example, the best damned text-adventure dating sim the Japanese market has ever seen, and for all that's worth in Japan, it'll still be a cold day in hell when you convince a company like Microsoft to personally pick it up and localize it themselves.
There are several publishers that have built solid reputations and businesses based around localizing more "niche" (as in, niche in America) titles such as the more obscure S-RPGs and the like, and Microsoft simply isn't one of them. I really don't think it's fair to criticize them for not picking up titles like Spectral Force 3 or Diario, as that simply isn't their sector. Same goes for Every Party.
As I said before, a company like Mastiff, Xseed, or perhaps the recently founded Gaijinworks (the company formed in the fallout of Working Designs' closure) really needs to start capitalizing on the potential niche market of the 360. There's definitely some potential there, niche though it may be.