I've never really understood how some people view Twilight Princess as an Ocarina of Time rehash. Aside from many of the areas on the map being in relatively similar locations if you play the GameCube version, they are hardly anything alike. Those actual areas are completely different than OoT, the dungeons are totally different with new concepts, there are new mechanics like horseback fighting and the wolf, there are cool new items like the Spinner and Ball 'n Chain... It's a completely different, new game that did not feel similar at all to me (aside from a few usual Zelda conventions that are in every single game).
Different strokes for different folks, then?
I wouldn't call Twilight Princess a rehash of Ocarina of Time. However, I think it follows Ocarina of Time's example a little too closely. It's Ocarina of Time 2 in terms of look and feel. There were, of course, enhancements and refinements beyond graphics and sound which would seem like bigger deal had there been no console Zelda games between Ocarina of Time and Twilight Princess. That said, I think what hurts Twilight Princess for some people (such as myself) is that The Wind Waker came before it. Even ignoring the cel shading, the world feels different. It's refinements over the N64 Zelda titles are immediately felt. Twilight Princess is more along the lines of The Wind Waker's Majora's Mask.
For me personally, The Wind Waker was the last Zelda game I really enjoyed before the formula began wearing thin. If you switched their release dates, I'd probably feel differently about them in terms of impact. However, I don't think my opinion that Twilight Princess fizzling out towards the end would change. The game is too long and the amount of things to collect is bonkers. The spinner was indeed awesome though criminally underused.
The only thing The Wind Waker was missing was an extra dungeon or two, perhaps one for Nayru's Pearl (instead of Jabun just saying, "Take this. It's a secret to everybody.") and another in the middle or end of the Triforce quest.
If Twilight Princess is a rehash of Ocarina of Time, then A Link to the Past is a rehash of Zelda 1.
I don't think that's the same (though, again, I don't consider Twilight Princess a "rehash" per se). A Link to the Past was the first game in the series with any real structure. In Zelda 1 and 2, you just wandered around until you figured out what to do. There's a feeling of real progression in addition to what better technology naturally provides. A Link to the Past is so different and so much more advanced.