Regarding 'Bania vs. 'Vania...it's a logical typo. As I understand it, V and B are similar in Japanese akin to L and R. I've seen this a few times in other Japanese-to-English translations.
As for logos, one way or another, Lords of Shadow was definitely the time to change the logo. The crescent moon is clean, but is getting old. The original logo is awesome, and would help boost nostalgia sales perhaps, but I think that the Castlevania IV-style logo would have been neat to have back, too. Ultimately, something that blends old and new would probably be best. (In the end, it'll be interesting to see how much the 'Castlevania' name itself helps or hurts Lords of Shadow).
LOAD BGM...I have to say, ReBirth was my first exposure to it (I've been slow to get Chronicles, even though it's easier to get than before). Anyway, the song grew on me fast. Love the bass line. A great tune that, like stage 2's rare music, gives ReBirth some extra uniqueness.