Here is what it felt like using iTunes 11.
Imagine walking into a music store with the task of picking up a Weird Al album. You see the rack of hundreds of CD's and realize there is nothing separating them. No "A", "B"...nothing.
You assume that Weird Al must be in the "W" section, which must be near the end, so you walk down and start thumbing through albums. You realize you're only at "S", so you move on. Eventually you come to "W" and start looking for the album.
The problem is....it's not there. Maybe it's under "Y"...so you move along and thumb through various artists until you happen across the album you're looking for.
Imagine this same concept in a comic store, or a book store. Apple doesn't seem to understand the concept of hierarchy. If I am looking for a Weird Al album on my computer, I need to know this basic information
1. Artist Name and/or first letter in name
2. Album
That's all. I don't need to see the songs, or anything else. The new "Album View" used to have an option called "Group Albums" which would organize them in ways that made sense to the user. My library in iTunes 10.7 looked like this.
You can see how quickly you can browse the high level information, and then narrow down to the album, then further to the song.
In iTunes 11, there is no such option. What you get is a grid (non-resizable), of every album in your library, with no separation at all. So when you're scanning the list, "Blink-182" may start somewhere in the middle of the row, or the end, or wherever.
This is a slow, and painful way to browse for music. Others have pointed out that I can switch to "Artist" view, but the problem is that it gives too much information. Each album is under each other, and information that I don't need at the moment is displayed. So, in that case I have to scroll down long lists of artists to find the album I'm looking for.
Here is what 10.7 looks like with (iTunes 11) view on.
Apple really took a step back with this version, for more reasons than the one I've described here. Their attempt to make everything i0S is creating this strange situation in which things aren't working as needed or expected.
Anyway, I went back to 10.7, and will stay there until things change.
