Respectfully disagree. This show has way more depth than most of HBOs current lineup. I can't speak about Treme, but Homeland easily tops Game of Thrones, Boardwalk Empire, The Newsroom, and True Blood.
Aside from Breaking Bad and Mad Men, what dramas were better this year?
I'd say Boardwalk Empire off the top of my head. Can't remember everything I watched last year. And that also doesn't prove that it's good. If there are 10 shows that are shit the one that is the least shitty is still not good, not saying that this show is shit but you get my point.
Also Boardwalk Empire has way more depth than Homeland. Homeland spells everything out for the viewer, whereas Boardwalk actually lets the viewers come to conclusion themselves.
Homeland is not a bad show but it's nowhere near my current favorite shows airing.