I personally do not like The Minish Cap. In fact, I might even go as far as to say it is my least favorite portable Zelda game. I've never really been a huge fan of ALttP either, though, so that might be part of it, considering everyone says they're so similar. I never thought such a thing when I first played through, but I suppose I can see where one might think that.
I don't know what it is about it that I don't really like, but I just haven't been a huge fan. I really wanted to like it – the whole concept of tiny people only visible to children and shrinking down to their size is just too adorable to hate, and I actually LOVED Ezlo as a partner. But the thing about it is that it just plain wasn't memorable. If you asked me now, I could hardly even tell you the plot of the game. I don't even know all the dungeons, let alone their order.
I tried to replay it when I got it for an Ambassador game on the 3DS, but I only got so far as Mt. Crenel before deciding I'd rather play something else instead. Some of it is due to the fact that I was so completely and utterly lost for a long time, with no idea how to reach the mountain.
I also don't like the music. I'll just flat out say that now. Hyrule Town and Minish Village are probably the only songs I really like (and Temple of Droplets theme isn't bad). I'm a very music-sensitive person, and I'm starting to think that partially contributes to my perceptions of these games. Part of the problem with TMC is just that... it sounds so staticy! The sound, I mean! Or maybe... that's not exactly what I mean... but I don't know how to describe it. I think the problem is that it was sort of a cross between the simple, catchy, charming tunes of the GameBoy, GBC and 8-bit games and the advanced music of newer console games. I did not like it at all.
And I can't name any characters in the game beyond Link, Zelda, Vaati, and Ezlo. Not one. Aside from Beetle. He doesn't count. None of the supporting characters had personalities that I liked. They were just... simple. And, if I remember correctly, all of the Picori were pretty much exactly the same as far as behavior goes. Lots of games understandably do that for supporting characters, but there were just so many Picori! Couldn't they have done something to have some who were a bit less than cheerful?
...Agh, it sounds like I'm just pointlessly griping again. I'm just struggling to attempt to explain why I don't like the game. Sorry if these complaints are silly. Don't mind me!
Either way, my opinion is that it's not the best of the Zelda series, but I obviously still had enough determination to complete the game, so it's clear that I don't hate it and probably enjoyed it at some point. I still find the style of the game really nice, anyway, and Hyrule Town actually was a rather interesting place to be, with plenty of shops and other buildings around. Unfortunately, as I said above, I do not remember much of anything from the game except for the first dungeon, because that's the only one I beat a second time. (And I remember fighting a giant Octorok, and having the boss key be at the beginning of the temple and extremely confusing me. But that's about it.)