Nah, it's still funny if she's awesome but perpetually foiled. She is, after all, Kim Possible. Everyone in the world owes her favors and believes in her fundamental coolness. Picture her putting together some elaborate Machiavellian plot and trying to hold the world ransom, and all involved governments just instantly, cheerfully roll over for her, and give her a big obvious *wink* as they do so. Because they all know she's a good guy, so they figure she's playing some long game. And before long she's the grand dictator of Earth, but there's zero satisfaction in it because everyone thinks they're just playing along and she can't get anyone to take it seriously.