Take the two cents of a new guy: Genjutsu could work, it'd just be more of a status effect/debuff thing. I haven't watched episodes of the series where Genjutsu was used recently, but why not just have a variety of status effects that genjutsu could put the user into. Low level examples would include: Confuse - The victim is percieving that attacks are coming in from a different angle than they actually are. Evasion decreased. Disorient - The victim is under a genjutsu that is making their world spin slightly, disorientating them. Their accuracy with all forms of attacks falls as a result. Fearful - The user puts the victim into an illusion where they are dealing with a personal phobia in addition to combat, decreasing their defense drastically. Sexy Illusion - The user, if fighting someone of the opposite gender, places them in an illusion where the user is wearing the outfit that the victim finds 'sexiest'. Therefore, their (offensive stat) is lowered. And their nose is bleeding. I dunno if the idea even has potential, or if the stats in the game would allow for something like this, but hey, every little bit helps, right?