Out of 10 points I agree with 1 and an half.
I agree 3rd person view can work and Metroid Blast was great but I also think 1st person view and 2D side-scrolling can work as well, you can't take multiple directions here, none of them is optimal.
I definetly agree they should try to create a sci-fi horror mood, they game would really benefit from it. Metorid Fusion had some "tension" moments as well.
As for other points, no narration elements and plot should be very minimal, Metroid is about isolation and exploration Super Metroid and Metorid Prime 1 have no dialogues at all and are the most immersive ones in the series. Even audio logs would be redundant, we already have those in Dead Space and Bioshock.
The same goes for the other points left, open world is not Metroid, not to mention online, just because you have to shoot things it doesn't mean it has to have online, it would make much more sense than an online mode for Zelda.