I didn't really like Bushido Blade at the time, but then again I didn't put much effort into learning the swordplay. I might try it again someday, who knows?
Because my brother doesn't want to affect the SSBM records (some silly reason of his, like how he wants Samus's record to be permanently stuck at 999 KOs or something) he likes to play Super Sudden Death mode all of the time (wait, is that what it's called? I can't believe I'm forgetting). You know, the one where players all have 300% damage. While it's not necessary a one-hit KO, it's mostly made it a quick-draw scenario and that may have soured SSBM for me because I forget what REAL SSBM fighting is like.
Is there a fighting game where you can damage their arms and prevent them from punching, or legs to prevent them from kicking or moving quickly? (I know Hybrid Heaven for the N64 had something like that but that wasn't fast gameplay at all, more like turn-based fighting.) Or targetting their eyes to blind them or smacking them over the head to make them dizzy or unconscious...perhaps an instant KO. Maybe you could kick them in the nads or give them a chop to the throat to stun them too. Then you could have something like a life meter where you wear out the other player with exhaustion or pain but if you know where to target, and how to hit that point, you can KO or kill them with one hit. Do that heart-exploding thing like in Kill Bill!
I suppose if it's too realistic, kids playing the game might pick up on real dangerous moves, though. But it might remind them of their fragility rather than believing that people can survive some of the ludicrous things found in unrealistic fighting games.