As for the challenges, Miles has yet to battle the likes of Doc Ock and the Green Goblin on his own. A side-effect of Peter's death is that Miles is much more integrated into the super-hero community and can receive a lot more of support.
Scorpion is in fact a major villain for Miles. He had an entire arc/tpb named after him; UCSM vol.2 - Scorpion.
I don't see the problem in having Miles team up with the Prowler to defeat Scorpion. Miles is 13 and he really needed the help.
Also, how does having to team up with the Prowler make Scorpion less of a major villain? If anything, it proves just how 'major' he really was.
Oh, and I guarantee that Scorpion will be back next year and will show just how deadly he can be with that hook-chain he wields. It's going to be be awesome.
I just think that Scorpion hasn't been the character-builder that Doc Ock or the Kingpin were to Peter, even though there is still a lot of potential for that in his future.
Favorite of the 52 In Order: Wonder Woman, Animal Man, Swamp Thing, Aquaman, Action Comics
"Power corrupts; absolute power corrupts absolutely."
"With great power comes great responsibility."
Peter Parker needs to be Spider-man, no matter what universe he's set in. Anyone else is just a guy in a suit.
Holding out for a Peter/Miles team up.
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