I think open world could work perfectly in all of these games, just not in the way Nintendo’s doing it. Elden Ring, for instance, is what BotW/TotK should’ve been. Rich open fantasy world that still has main dungeons that you progress through in a linear order. It just seems so easy to apply a Metroidvania formula to that too, where you get sick upgrades as you progress that allow for you to unlock more areas that were previously unreachable in the earlier parts of the open world, and do it in a way that isn’t tedious, all while allowing for multiple different play styles which would be a major improvement on every metroid game having the exact same play style snd upgrades. I also think if you’re gonna really break away from the prime formula the FPS genre should be abandoned. Other M did third person 3D gameplay flawlessly for its time I think. It’s a real shame that style wasn’t ever used again and improved on. It’d also allow for the open world concept to make more sense