umm, why not just make it a wish? it makes perfect sense.
"shenron i wish i could relearn my skills in a diffrent way"
"ok, donzo"
"nice!"
the catch is its not a reset book, its a instant reset of ur skills right then and there, you cant trade it, you cant sell it. you use it.
I REALLY dont see why not have it when the game launches 1.00 and is out of beta.