I never said that the Prime games don't reference Alien, but they don't have the same atmosphere at all. And I would absolutely disagree that Prime 2 is the creepiest of the series. Definitey the most uncomfortable in a good way, but not the creepiest.

If you think that I made all of that to simply say that I wanted more "horror" elements in Metroid, then I clearly did a bad job of protraying what I want. Super Metroid had an atmosphere that wasn't present at all in Prime. That's not me criticizing Prime; Prime was good and that atmoshpere would have clashed with the stories those games tried to tell. That same atmospere is present in Alien, and it's present in Metroid Fusion a little bit with SA-X, but it is the entire game of Alien Isolation. And I don't want an entire Metroid game to feel like that, but Prime didn't feel anything like that. There are parts of Prime that feel almost exactly like parts of Metroid games, like the Under Water Frigate, but there are parts that feel nothing like it, like the entire "star trek" atmosphere and lack of "Alien" atmosphere.

And it's not so much the "horror" that I'm focusing on. I made sure to use words like eerie and unnerving because I didn't want anyone to think that I just wanted a scarier Metroid. That's not the point. It's things like seeing the muscles desolve off of Crocomire so that only his sceleton remained. It's how grossly organic much of it felt as opposed to futuristic and cybernetic. Craid didn't feel like a giant monster, but a giant reptile. Any place with tech had a distinct "1980s" spin on it that Prime doesn't have, but Isolation does. I don't even like Isolation, but I think it nails an atmosphere not felt in any game since Super, and done in a completely different way in Bioshock.

And again, I'm not criticizing Prime. Prime's atmosphere was perfect in all three games. I just want something different, and I don't think Retro would do that.

I agree with some things. This could all be summed up, however, as "I want Metroid 5, not Metroid Prime 4." I understand the difference. Thing is, I want both. For the same reason Mario can be in a kart racer, a party game, multiple styles of RPG, and multiple styles of platformer, Samus can be in multiple styles of game as well. Her main series and the Prime series are just that. They're like the Mario 64 style and NSMB style of Mario, but with Samus. When 3D World came out, it confused people. People divided Mario into 2D and 3D, but 3D World is really the "2D style" of Mario finally translated into 3D. Some people were rightfully angry, because they already had NSMBU in that style on the Wii U, and wanted the 64 style, and 3D World was not that. Both styles were platformers, but 3D World had the spirit of the classic Mario platformer style. However, both styles very much deserve to be continued, and the classic style very much deserved its 3D evolution that 3D Land/World brought it! Problem is, what gamers needed was the Mario 64 style. In the same way, Super Metroid style Metroid and Prime style Metroid both deserve to be made, but Metroid 5 is loooooong overdue. Miyamoto has said both will be continued, and everything seeme to point to Metroid 5 being the next to come, and it will probably be on 3DS, whether that pleases you or not. I think it will be the 3D evolution of Super Metroid you're looking for. Might even be N3DS exclusive to take advantage of the better hardware. Prime 4 will come later, and be on home consoles, maybe Wii U, maybe the next console, maybe even cross gen.

BUT! I actually agree on the Retro thing. Metroid 5 should NEVER be made by Retro, but that's obvious and beside the point. I've been thinking this for a while, but afraid to say it. When the time comes for the next Prime style game, it 1) should definitely not be called Prime 4 or even be connected to that side story, but rather be a new story, and 2) while Retro making it would probably turn out okay and not be a disaster, I think Retro has lost their passion for Metroid, and that's why they made another Donkey Kong game, and they should be able to make whatever they want. That's why Nintendo games turn out so well, Nintendo gives the developers freedom. If Retro has moved on, it's in everyone's best interest to just accept that. Let the team at Retro make what they're passionate about, and give someone else a chance at Prime style Metroid. Not sure who that should be, actually, but it should only be Retro if that's what they want to make. That is how we'll get good games.

Also, you're right, the next 3D Donkey Kong NEEDS to happen, and Retro would be a great candidate, though I doubt that's what they're doing if they're hiring for boss enemy AI coding. I'm personally hoping for a new IP.

When I say creepy I mean unnerving, eerie, atmospheric, unsettling, etc.

You don't get that feeling by just playing the game, you also need to read the scan logs. And Metroid Prime 2 had some very unsettling scan logs. I loved playing that game with all the lights of during the middle of the night. It felt creepy to me, especially when I was in the dark world. 

Besides, I think Prime 2 is very different compared to Prime 1 and Prime 3 is nothing like Prime 1 & 2. I personally hope they return to the style of Prime 1 & 2 and not Prime 3. Prime 3 felt a bit like "Halo". I want to be stranded on an alien planet again.

And Retro Studios is not the same company anymore that made the Prime games. Almost all of the staff left. A new Prime game by them may take the series in a new direction again.

As for 2D Metroid, save that for the 3DS and I hope they use a sprite based artstyle for it... Metroid: Zero Mission and Metroid Fusion look better than the majority of the 3DS games... 

Imagine a Metroid game that looks like this: 

What you mean is "Give me a movie, playing is for casuals" XD Metroid Prime has a better story than Other M, but you have to explore and analyse everything you can to know it, I rather play and discover the story playing than seeing 10 minutes of CGI with a blockbuster treatment every 30 minutes, that´s annoying.

Other M's story was essentially "Go here and shoot this" but with a bunch of flat character monologue in between. Fusion did what Other M attempted much better. The Prime games felt more immersive and the back story and characters didn't need to have minute monologues to express their actually rounded personalities. 

I don't dislike Other M, because I thoroughly enjoyed the gameplay, but the story is not its best feature, and to say other Metroid games don't have stories is a sign of ignorance.