I hate clicky, plastic sounding drums. Might as well use a drum machine or a typewriter, it will serve the same purpose. Often it bores me, especially when the drummer doesn't mix things up. It will almost sound like the same drum track is used for every song.
I guess I mentioned it earlier in this thread, I generally don't like songs with fade-out endings. But there are exceptions.
I generally like intros/outros but I strongly dislike it when they have nothing in common with the rest of the album or do not enhance the album in any way.
I don't like lyrics that include expressions like "all for one, one for all" and "the tables have turned!" Angela Gossow uses tons of these.
Regarding the packaging aspect of music....
I hate double-sided discs!
With jewel cases, this is a good jewel case:
This is a bad one. There's worse, I just couldn't find an ideal example.
The difference is on the right, the tabs on the front that keep the booklet from sliding out. I only like the lengthier, vertical ones shown in the first image. The tiny horizontal ones (and to a lesser extent, the round ones) can indent and damage the booklet! What sort of idiot doesn't understand this? This is a major pet peeve and any time I get a CD with one of these jewel cases, I have to replace it.