I'm kinda sad how really goddamn awesome characters are introduced and then immediately killed (Baba Yaga, Necromancer, Laura, etc.)
Back on topic, I'd vote sorta between "Good, but let's fix--" and the "someone else, plz" option. There were some pretty good ideas in here, and I really really hope that Mercurysteam and Cox are willing to listen to constructive criticism because there are parts in LoS that make a sequel seem destined for greatness. I just pray it doesn't pull a Curse of Darkness and just amplify everything wrong with the first game.
On the other hand, I'd love IGA if he were to make a 3DS Castlevania.