They treated the whole Khan thing way too comic book like. Khan is not the Joker, who is a constant enemy of Batman. Khan is just one of many antagonists, and the crew had to face a lot more problems and adventures.
They confronted V'Ger, the Whale Probe and stopped a Klingon-Federation conspiracy. All that was far more dangerous than Khan ever could haved dreamed of being.
Gotta agree with you on that. But it goes all the way back to TWOK and the fans going Boba Fett with Khan. Over the years Khan's rep has been inflated into him being the only true nemesis of the Enterprise crew. When the reality is that he was never much more of a threat than any of the other one of villains in the episodes.
I disagree. In the two times the Enterprise encountered Khan, he managed to successfully hijack not one but TWO Federation starships; the first time the crew regained control only due to the sudden face-turn of Khan's bottom bitch, and the second time, they NEVER regained control, and Khan managed to steal the Genesis device on top of it. At that he was basically Blackbeard with a nuke.
The only one person in Enterprise's resume more dangerous than Khan would actually be Nero, but the Original Enterprise never had to face Nero. More to the point, Khan was NOT the most dangerous threat to the AT Enterprise -- again, that dubious honor goes to Nero, with Admiral Marcus as first runner-up.