Intervista del 2015, chissà che qualcosa non si avveri

Speaking to Eurogamer at E3, Metroid Prime series producer Kensuke Tanabe said that due to the amount of content such a game would require, it would probably take several years to develop.
"If we started for Wii U now, it would likely take three years or so. So it would likely now be on Nintendo's NX console," he said.
"It's a long time but it would need to include a lot of content, which would take a lot of work on the development side."
Speaking with Tanabe, it was clear he had plenty of ideas for the game, including a focus on a single planet that has a time-shifting mechanic, similar to Metroid Prime 2: Echoes' single planet with dark and light variants.
"Instead of broadening it to more planets I would have one and would focus on the timeline, and being able to change that. That's one interesting idea I have in mind... but I understand many people thought that [Echoes] was too difficult."
Regardless, Tanabe continued, two particular storylines wrapped up in Metroid Prime 3: Corruption would not be revisited.
"The stories of Dark Samus and Phazon are done now," he confirmed, before adding that the series would still focus on other Prime-series elements.
A future Metroid Prime game could be a numbered release, too. "Three ends the trilogy, but if I can I would like to continue with numbered games."
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We asked Tanabe if Metroid Prime Federation Force is the only Metroid Prime game he's working on. "I said this at the beginning, but I’m not involved in the 2D Metroid games that [Yoshio] Sakamoto works on," Tanabe said. "I still feel like there's a little more work left for me to do in the Metroid Prime series. I can’t say when, but I want to make another one.
Tanabe reminded us about the ending of Metroid Prime 3: Corruption. After Samus’s ship flies off into the distance, another ship suddenly appears. He said that players Metroid Prime Hunters should recognize that the ship belongs to a bounty hunter called Sylux. "He’s actually chasing after Samus, and that’s where that game ends," Tanabe said. "There’s still more I want to build around the story of Sylux and Samus. There’s something going on between them. I want to make a game that touches upon [it]."
"I’m also thinking that, in that eventual game between Sylux and Samus that might get made, that I wants to involve the [Galactic] Federation as well," he said. "So it would be a good idea to release a game like Federation Forces to flesh out its role in the galaxy before moving on to that.