This is Grand Theft Auto, not Saints Row, I see neither.
I'm going to go on record now and say that
the spaceship parts will end up being part of a hoax by some hippies, conspiracy theorists, pranksters, journalists or something, there will not be aliens in GTA V
Yea you're right. We know there will be lots of weirdos in GTA V.
However, let's not rule out the possibility of DLC episodes like RDR Undead Nightmare but with Alien invasion. I know R* gave the zombies or alien DLC a thought for GTA V. But since zombies had been done for RDR, leaning towards Aliens. I know this isn't SR4. And I may be completely wrong and this was just Garbut's ideas in the planning stage.