I think Horikoshi MIGHT have finally hit the right spot for an effective comic with this if he knows what he is doing for the long run. It definitely shows that learned from his major mistakes with Bulge and didn't go "too" wacky/alientating like the Zoo comic (even though I liked it). He pretty much has a good theme setup which isn't lame like Bulge's and picked a genre which is doing fairly well right now (so at least it shows that he did his research on what's popular to stay on the safe side). My only qualms with this is that it can possibly see it going three ways (two of which wouldn't be good for Horikoshi):
-One Punch Man route: the protagonist becomes a hero through effort. This is a great theme (and definitely what Naruto should have gone for) but it would resemble way too much with OPM and the fact that it's already an over the top super hero comic…it probably wouldn't be good for him at this point considering how popular OPM is at the moment. Essentially this would turn this comic into a OPM Prequel.
-Naruto route: the protagonist either awakens the powers (or had them all along, or ends up receives them) which pretty much would defeat the notion of hard work/effort leading to success. However, since it did show that he worked hard, I guess it wouldn't be nearly as bad. However, the fact that they hammered in the notion that he's NOT special for the entire first chapter (and repeated it over and over and over) would be kinda irritating when he suddenly gets powers. I'm so relieved that Horikoshi didn't give him any super powers at the end the first chapter. That would have been remarkably lousy.
-What I prefer route: the protagonist ends up being stronger but also relies on wit, effort, and passion rather than strictly super powers. I honestly hope Horikoshi goes this route and it seems to be implied that he will go this direction due to having his protagonist being obsessed with researching the heroes and such. Not to mention that he is shown to be extremely passionate while everyone else kinda takes their powers for granted is another appealing quality trait that I hope he maintains. Giving him powers would take away both qualities (or at least diminish them) which would be a real shame.
So yeah, great start, but I hope it maintains its momentum (which it SEEMS like it is doing according to the high ranking). At least the visually appealing super hero motif should keep it afloat even if the story does sour.