[@The Harbinger of Ferocity]
I removed Limit Break. Basically, John cannot do superhuman feats anymore.

I also nerfed John's hand-to-hand fighting techniques. Sure, his physical enhancements make him stronger, but his fighting style is still unorthodox. Would that be okay?

Besides, John was meant to be a man of technique. If you strip all of that away from him, he'd be just a regular guy in his teenage years. Sure, he can use breathing techniques as a healthy alternative for steroids, but his body still has it's fragility. If a low-tier mook were to successfully shoot him with a powerful shotgun, his entire arm would probably be blown off.