I really liked the game (yeah, I finished already). But, it's not a 10. For brevity alone the game has to take a few hits. It's short. Really short. Really, really short.
I finished CoD4 in about 9 hours. This didn't take anywhere near that long. And, yeah, even though it was a terrific ride with many twists and turns, it needs to take it's lumps for being so short.
I only played one game of MP (TDM) and I liked it quite a bit. The map was bigger than most maps from CoD4, which was a welcome relief. And, of course, early on in the release nearly everyone was of the same rank.
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"All religion, my friend, is simply evolved out of fraud, fear, greed, imagination, and poetry."
Edgar Allan Poe