I've also come to really appreciate Yusuke Urameshi as I rewatch Yu Yu Hakusho.
He's a punk of the highest calibur, a good person at heart but a slacker. He's honestly just a kid and it shows in how he approaches things.
Yusuke's incredibly powerful but there have always been people better than him. Toguro scared the ever living s**t out of him for a while until he finally overcame his walls.
He's always being shown that he needs to strive to improve not just for himself but for the sake of his friends and family.
And as I've seen so far (around 80 eps in right now), he never seems to pull powers out of his a**.
Anything he's done, it has either been taught to him by Genkai through rigorous training (and even then it doesn't always do him good), or
he's just improved on his own powers and strategies through hard work and cunning. Yusuke's boss at reading a situation when given the chance.
You could argue that much of Yusuke's pushes to his strength come from "the power of friendship" since he often gets riled up on account of others, but
I bring up this argument; wouldn't
you feel like there's been a fire lit under your a** if someone hurt
your friend/girlfriend/whatever?
I'd want to give it my all and whoop that dude's a**, too. It's not like that's a trope that can't be related to.
I could bring up a lot of shounen heroes that stand out but then I'd be writing an essay at that point.