Agreed, a new 2D Castlevania - one that stuck to its arcade roots - would be very successful on the Wii. I really enjoyed Order of Ecclesia and I'd love to see a more fleshed out game similar to that on the Wii.
Contrary to popular belief, I don't think that "casual" players are the biggest userbase of the Wii, but arcade style players (look at the best sellers, Mario Kart, Wii Sports, NSMB, DKC, Wii Play, etc), and Castlevania, at least traditional Castlevania, is very much an arcade style game.







