Not the most impressive of reveals. As a guy who's played a ton of Metroid Prime, when I look at these game environments, what I'm looking at first and foremost is level topography. "Is this cliff too high to jump?" "How many doors are in the room?" "Are there any interfaces to my abilities?" etc.
What I see in that twitter post are a bunch of flat rooms and corridors with nothing but walls and cliffsides. There's nothing to spark my imagination for how I might actually explore the environment. As a trailer for a Metroid game, that's a catastrophic failure for building hype. It leaves me a bit concerned for what the actual game will look like. Hopefully Retro's PR team just sucks.
I think I'm pretty clear already but I want to indulge myself. For a good example of what to show off, think of the camera pan of Main Plaza in the Chozo Ruins of the first game that plays in game when you enter for the first time. The camera sweeps across the main entrance over the half-pipe and to the other side of the room, passing over the doorways on your left and the climbable rubble on your right and the overhead bridge. That sparks imagination. You could name dozens of rooms like that I'm sure (although the first one I thought of was Frozen Courtyard from Phendrana for its large, central platform surrounded on all sides by a moat and ice platforms you clearly have to raise somehow via the morph ball slots on the walls). Something, guys.