I got my Collector's Edition today, I'm about 1 hour or so in and so far I'm really enjoying it. I haven't played a lot of Metroid games (though I watched a ton of Let's Plays so I know them well), have only really played Metroid Prime and Samus Returns fully.
The gameplay is a lot like Samus Returns, with some new things. I was worried based on the early teasers that I'd be annoyed by the whole "getting hunted by unkillable robots" thing but it's not overdone so far and it gives an interesting twist to the gameplay.
The graphics are gorgeous and the animations are super smooth and fluid, and so far the cinematics are freakin badass.
I was also amazed by how huge the CE is, the box is a good 15 inches tall because the artbook is a full size book, was expecting a small booklet as is common in game CE's. I haven't opened it yet though because I don't wanna get spoiled by the artwork inside.