Ya, I'm not taking away anything from Prime. Especially the first one, it was pure perfection, up there with OOT for me, just such an amazing game, I still go back and play it. Prime 2 was great, Prime 3 was good as well, but not as much as the first 2, but still good regardless.
But there was just always that sadness that I could not see good ol Mother Brain, or Kraid again, though you can find screenshots of Kraid in Metroid Prime, but they cut him, and put the Space Pirate Omega in it's place. Though again, it took nothing away from the game what-so-ever. But would have been nice to see the trio of Ridley, Kraid and Mother Brain in there.
LOL all this talk makes me want to go back and play Metroid Prime again.