He has a hard time coming up with catchy tunes. Oh well.
Eh? Plenty of people find his tunes catchy (POTC anyone?). The problem is that he's all-too-often cannibalized his old music for new films maing many of his scores sound essentially the same. But he has tried branching out a bit of late -- Sherlock Holmes
was more-or-less an intriguing departure. Inception
has gotten a bit of praise (though, personally, I don't like it). Using Zimmer for something as iconic as Superman
is, IMO, high-risk/high-reward. The result could be something that's powerful and fun. Or it could be more of the same. There's no way of knowing, really, until it's done.