AC, I'm sorry (happy) to tell you that I know someone very high up in Retro and have talked to him a great deal about the Metroid games, and he seems to agree with me. Hardly surprising since Retro's games actually feel like Metroid, no matter how much they change the perspective, add things like scanning, change iconic abilities like Screw Attack, etc. They know what makes a Metroid game, and they make sure that's in there, then go in and screw around with the formula as much as possible without messing up the core. I'm sure Prime 3 will take that idea even further.