If all-out battle royales are your thing, you might want to check out the above trailer for Naruto: Clash of Ninja Revolution 2. It seems to meld the finesse of a fighting game with the brutality of a brawler, and evidently does a pretty good job of it. Hopefully, the key to winning battles won't just be spamming the Shadow Clone Jutsu over and over again -- we are looking for a nice, balanced fighting experience.
If you look closely, you'll be able to see a few on-screen indicators of particular Wiimote movements in combat. Gone are the days of pushing complex sequences of buttons rapidly to execute attacks -- fighting games have evolved somewhat to recognize fluid movements as a valid form of control. It works -- believe it.