I've been reading this thread since I upgraded to iTunes 11 several weeks ago. I have always used the Column Browser to locate music in iTunes. Since I have music in several different genres, this has provided me with a way to browse through my library based on what genre I feel like listening to. I then look through the artists and select one, and then look through the albums and select one.
In iTunes 11, the Column Browser is only available in Songs view, but Songs view has two major deficiencies mentioned in this thread:
1) No album art is displayed in the song list.
2) There is no visual divider of any kind between albums.
Songs view is just a big spreadsheet, not what I want to be looking at when I'm browsing for something to listen to.
The other views are pretty much useless to me for browsing my library, because they use a flat list where all of the genres are mixed together, and I can't drill down into my library like I can with the Column Browser. Once I've started playing an album from Songs view, I do sometimes switch over to Artists view so that I can see the cover art. Unfortunately, if I then switch back to Songs view, the Column Browser resets itself (a problem also mentioned in this thread), so that makes the Artists view workaround less useful.
What I am hoping, and I'm sure what many others are hoping, is that Apple will see this thread, and read the feedback that's been submitted, and fix these problems. These are not things that would be difficult to fix. We believe that the current iTunes design is flawed, and no amount of suggesting we use Albums or Artists views is going to change that.