I liked the 'fetch quest' myself, but I can see how others would not. The game definitely has issues, but it was amazing none the less. I particularly liked how there are always tons of random things to explore. There are lots of little random caves & islands to check out that are completely optional, and that's the kind of thing I really like in a Zelda game. As far as I'm concerned, WW is the one 3D Zelda title so far which has come closest to replicating the experience of a 2D Zelda, because it's the only one with a proper overworld(complete with a grid based map because it's so huge). I do wish the game was a little more difficult, but the battle system was just so much fun that I have trouble faulting them there.
If it had the missing dungeons, the game would've been perfection and probably the best Zelda game ever. As it is, it's still near the top, and yes it's better than Twilight Princess(though I liked TP, as I do all Zelda titles). The only Zeldas I rank higher than WW are Majora's Mask & LttP.