The only question I would have, as with all multiple character fighting games, is which characters get which level of importance. Beyond Mitsurugi and Taki as the mains (as far as I can tell) I have little idea where the others would fit.
Funny, I always thought Xianghua, Kilik, and Maxi were the main trio.
Xianghua because she gets Soul Calibur, and the other two by association.
Yup, there ya go. Buncha good fighting scenes, big thing at the end with Nighmare, et cetera. And it's not like it'd be hard to set up the sequel or anything. Heh, they're such great characters... But I can't imagine who they'd have to get to play, like, Voldo. Some aged but hyperflexible S&M enthusiast... Hm.
For Voldo, they'd probably hire some no-name contortionist guy to play him.
Kinda like what they did with Darth Maul. And, IIRC, Sabertooth for X-Men The Movie.