Maybe because that would ruin the series and no one likes a damn move spammer.If he is edo why cant kabuto just take control of him and keep using his suicide technique over and over again?
Sasuke could see through it all easily because of his Sharingan, I doubt anyone else would find that its weakness is Raiton (aside from Kakashi and Shikamaru and such smart guys), and even that person should have Raiton to begin with, and even if you have Raiton you still need to be careful of C4 it's horrible.His C4 is also pretty OP, people seem to forget about it just because Sasuke could beat it... but fact is it would defeat practically anyone in the series who doesn't have eyes to detect it PLUS raiton to disable it.
Guy if he's edo he will be op cause of 8 gatesWho???