TMC fell on its face with the apparent self-sacrifice of the copies, who, as we know from our experience with "Tin Man" would be all "screw that" if someone suggested they die for their "real" counterparts.

That's what disappointed me most, I think -- that the copies didn't seem to have any desire for lives and existences of their own. Why the heck not? They're flesh-and-blood humans, and on top of that, they're copied from five stubborn, idiosyncratic, think-outside-the-box people. Obviously the Replicators went wrong somewhere *g*, because I can't imagine how they ended up with a McKay or Ronon or Sheppard who would meekly accept that they have no right to an independent existence simply because they're a clone.