^^ I definitely agree.
Although the COD series is what I play the most (Started with COD 2, and own every game since then), it does get very repetitive.
In story mode: Go in, kill some people, try to be silent, if not..kill everybody you see, save _____, escort him back.
In online, the maps and guns/perks are the only things that are different. The gameplay is pretty much identical in every COD game.
Nonetheless, I will be getting every new iteration of the COD series, and play it until it gets boring.
For me, the multiplayer in Black Ops really seemed to be a let down, save Wager matches. Hence why I only play Zombies with friends now-a-days. I've been playing so much Zombies lately, I actually had a dream I was in Kino Der Toten last night.