I watched this trailer, and I felt like at several points, I was looking at a revival of Super Metroid gameplay. To me, this was the game announcement of E3.
The Prime games did bring the Metroid atmosphere to 3D, but I feel like they didn't completely capture the gameplay aspects. To see this title, as someone who was a tepid fan of the Prime series, makes me very excited. Even if this game turns out badly, I'm shocked to see Nintendo is willing to work out and experiment with Metroid, and possibly other games, in order to recreate new experiences to capture the feel of a 2D game in a 3D environment.
I'm not iffy about the cutscenes, I don't see anyone complaining about the sub-linearity of Prime 3 or cutscenes from them here, so I think we should dismiss these things until after we know more. I, however, look forward to speed booster running, one of my favorite Metroid things.