War Paint was my favorite album of 2011, so I'm incredibly excited that you think this tops it. That said, I am worried about monotony. War Paint was great in spite of the monotony, which was a testament to how strong all the songs were, but I'm not sure how long they can keep that up.
Transatlanticism is the album that does this perfectly, in my opinion.
That's the first album that popped into my mind when I read that comment. Transatlanticism is such a perfect climax and like you've said, it's a cyclical experience with A Lack of Color being able to move right back into The New Year. Ahh.