I would love to say that I disagree with you, but I can't. The only thing that draws me to games these days are the stories, provided they're above mediocre. I didn't finish Mass Effect 2 or Red Dead Redemption because of their original gameplay mechanics, but because their stories intrigued me. Like a soap opera addict, I wanted to see what would become of John Marston at the end of his journey, and I wanted to find out just how suicidal that mission in ME2 was, and what things were in store for ME3.
But as far as gameplay goes, neither offered something that I hadn't seen before. While I don't think originality is dead, I do think it's increasingly more difficult for developers to be original. If not because of the sheer number of games being published, then because of the risks that come with trying something different.
Just imagine spending twenty million dollars on a new, innovative game, and having it completely tank because people fear change (hate to say it, but it's true). Such a thing can be the undoing of a developer. Just look at the amount of development studios that have been shuttered this year alone, and I can kind of understand why developers and publishers are so afraid of doing something that breaks the mold.
And to be fair, I too am growing weary of the rinse-and-repeat attitude that's permeating the industry now. And I think the only way for things to change is if the majority of the game playing audience begins having the same feeling of reluctance.