the only good fruit for him would be the one that is capable of making things grow up to 100 times, also increasing his speed... with that fruit he could have the power to cut the world...
It is not brutalizing, it is being realistic, imagine that for us the pokemon would be the animals, if you run into Leon you will hardly come out alive
is power up coming? It would be nice, really, from my point of view Midoriya was never worthy of obtaining that quirk, he wanted to be a hero but he kept crying and regretting not having a quirk