Yeah, that would be pretty bad... I really hope they keep some of the canon in the movie (that whichever Belmont it is is only there BECAUSE they know they need to kill Dracula). The family obligation/curse is sort of what makes what little story the series has work: they had a hand in making Dracula what he is, the family heirloom is the most effective tool in existence for hurting him (and only THEY can use it), therefore it's their responsibility to keep him from hurting others. Others can (and have) stepped in, but it's THEIR burden to bear.
I almost hope they use Castlevania 3's story as a basis, as it's the most coherent as a plotline...
- Dracula arises for the first time since he gained power, casts darkness over Transylvania.
- Trevor Belmont (who's family was exiled because of their powers) returns when he hears Dracula has returned, goes on his one man path of destruction against Dracula's forces.
- Trevor meets allies along the way (Grant DeNasty, Slypha Belnades, Alucard Tepes) who are also after Dracula for their own reasons.
- They get to the castle, much ass is kicked. Include the Grant/Slyhpa/Trevor love triangle along the way to spice things up
- They confront Dracula (who should have been taunting them along the way, like a proper movie villian) and defeat him.
- Do ending stuff (Trevor and Slypha become a couple, Grant feel rejected and goes back to being a pirate, Alucard seals himself away)
- Roll Credits
- Stinger scene is Death arriving and implying that he will begin the process to resurrect Dracula once again.
- If the movie does well, do Symphony of the Night next.
... but of course, that would require someone other than Anderson to helm it.