We also have the problem where many classic staples of Metroid gameplay specifically require third person perspective -- I'm not just talking about the screw attack, but environmental puzzles and platforming demand a better sense of spatiality than FPS provides. This is borne out by Metroid Prime's own designers, who had no choice but to clumsily wedge in awkward switches to third person perspective with fixed, highly controlled cameras whenever they wanted to do a morphball segment. These segments weren't a design victory but an admission by the designers of the game's flaws. Controlling, overdesigned shit like this works against the core of Metroid and shatters the entire fantasy in a single stroke. When you have a game that has a real sense of mystique and isolation, where the onus is on the player alone to navigate its depths -- you simply can't have the designers step in and jerk you around or show you things whenever they decide it's necessary. And if the premise of the gameplay means that it's necessary, then re-examine the fucking premise.