So I went back to my CS while I had time and I found myself questioning the authenticity of Yasukazu's weapon of choice [the colour balls]. What I mean is, the job of a Corrector will include fighting of Vs. Would these Vs really be able to be defeated without any actual weapon and just human force, even if they were trained in martial arts? I keep finding myself doubting that. 

I wanted to enhance or perhaps change the weapon of choice, but I'd like to ask; assuming I keep the colour balls and as suggested before increase the number of different effects, how many effects can I have before it becomes over powered or unreasonable?