If this new Metroid is made by Nintendo EPD, I have a lot of confidence in the youngest new generation of developers in the company. They understand pretty well the trends in the current video game market.
If before the release of 'Splatoon' someone had said that Nintendo was doing an online competitive shooter, people had laugh in his face. But still, Nintendo was able to create an iconic new IP that was a big success even in Japan, a country in which traditionally these type of games don't work as well as in western countries.
If before the release of 'Breath of the Wild' someone had said that Nintendo will be able to make a modern open world game with the ambition of an Ubi Soft or Bethesda game, by using some of the conventions of the genre stablished by western developers, people had laugh in his face. But still, Nintendo was able to produce a game relevant in the current video game market, with impressive critics and winning almost all of the best game of the year recognitions.
An I say that this new generation of developers in Nintendo can create a modern open world FPS by using some of the conventions stablished in games such as 'Deus Ex', 'Prey' or 'Dishonored', by doing the same thing that they made in 'Splatoon' and 'Breath of the Wild'. Which is to add to all of these modern conventions their own flavor and Nintendo way of doing the things in an unique way.