I think part of the problem with a game like VC (which I love) is the plot. JRPG's plots are often corny and cringe worthy. Sometimes I just sit there embarrassed that I'm playing a game with these strange looking characters with silly romantic subplots. I guess I have very western tastes, but if you can't win me over, then you have a problem.
I'm playing LBP now, and I think it's absolutely delightful, but on the wrong system customer base wise. Also, the level creator is awesome but too complex.
Anyway, I hope both these games find larger audiences, because they deserve them.