Music-wise, the composition is lacking, but it is evident that Michiru Yamane (finally) took a leap forward in sample quality. She is using the same samples used to make the Castlevania Chronicles game on the PSP. It's called "East West Quantum Leap Symphonic Orchestra." I would know, because I use them myself and i'd recognize those strings anywhere.
The improvement in quality, and somewhat lackluster composition from Yamane is making me wonder...
There is probably a next-gen Castlevania in the works. Of course, there are rumors of the Wii Castlevania. I remember in an interview that if there were to be a next gen Castlevania, IGA wanted it to look "absolutely beautiful," and Michiru Yamane promised it will "sound beautiful" so it makes sense that they would adopt new sound samples for a next gen game.
Yamane hasn't gotten comfortable with how to use the samples to their full potential, but so far she's sounding good. The reason why I believe her music for Order of Ecclesia is sounding...average, is because she working hard on her next-gen soundtrack.
Anyway, yeah, that's what I think.