In Reply To #1
I hosted a Castlevania theme party on back in 2003 when Lament came out. I put the date on Holloween to encourage my guests to come in costume --which about half of them did. A couple guests created wonderful costumes from scratch --one was more inspired, but the other was very authentic. Creating such costumes can be a very expensive endeavor, even if you have the time and the skill to tailor yourself.
Roleplaying a battle in cosplay like you suggest would certainly put that kind of seamwork to the test. Not to mention the expense of "renting a castle" ?!?! Even my party (which hosted nearly a couple dozen people) cost me over $1000.00 for decorating, food, party favors, etc... Still.. It would be nice if the hardcore fans could somehow --come together someplace to celebrate Castlevania in a meaningful way --a convention of some sort.
As bad as everyone thinks the Castlevania movie could turn out, it would almost certainly be easier on the eyes than some amatuer video of a Castlevania cosplay battle posted on youtube.