[Fish]

Here's another thing that bothered me about the Sentinels:

Spoiler!

Magneto's control of the Sentinels. So he takes shitloads of railroad track and imbeds it into the Sentinels bodies in order to move them. OK. But then we see him "Controlling" the Sentinels. For one, we see the Sentinels chest turbines blowing air, activating targeting systems, weapons, etc. There's a scene where Magneto tells one of the Sentinels to "Do what you're made for". In which the Sentinel attacks Beast because he's a mutant. Why wouldn't the Sentinels target/attack Magneto right then? How could he tell it to go kill another mutant when he's one himself?

That in addition to the "Adaptive" ability from Mystique's DNA, really didn't settle well with me. The movie kicked much ass, but that's a flaw that could have been easily addressed somehow. Mystique is a shapeshifter. If she changes herself to look like Collosus, she doesn't gain Collosus's hard skin, she merely looks like him. But the Sentinels seems to gain abilities from the mutant powers instead. They never really explained it, other than Trask mentioning the "Adaptive" ability very briefly. It made it feel like a cheap and lazy explanation.