He'll be limiting himself with useless coordinated motions suppressing his movements with mortal coils held in high esteem due to the vulnerability of human bodies which he has already surpassed.
Doesn't change the outcome. He will still die... in a year. He needs oxygen to survive, and even if his body is able stop change due to atmospheric change in the environment, his organs definitely still need oxygen.
While he does not need it, I think he should learn how, there is a reason for this, he would be able to control his punch better is what I think, for example that meteorite... he probably could have hit that in such a way that the momentum of the meteor could have been absorbed and directed it back out into space, the damage caused by the shattered meteor fragments, while much less powerful wrecked the city... I also think it would be good if for some reason he meets his version of Kryptonite. If he could hone his martial arts to the level of Garou for example, then he would be strong even without his OP powers.
Making him stronger ? Unlikely. Giving him more moves to look cool while doing or to use if they miss his straight up hits ? Plausible
Nice explanation.. ^^ I guess it makes sense. Even now there is no one else with a higher level of power compared to him *that I know of*. Maybe it really is the limit.