I still don't really think Bethesda is doing MP4, but if it was, I actually think any of the studios at Bethesda would at least make an okay Metroid game, even Bethesda Game Studios itself. All of them make first person action games with some focus on exploration and developing the player character's abilities. Of those studios Arkane has definitely displayed the greatest ability to make a Mettroidvania. A Metroid that's like Prey and Arx Fatalis would be dope. But I wouldn't put it above MachineGames or id to do a good job either.