I assume you were simplifying to give people an idea of what that global illumination implementation is doing. It’s certainly something that could be considered as a step towards ray tracing without the big frame rate penalty.
https://docs.cryengine.com/plugins/servlet/mobile?contentId=19377157#VoxelBasedGlobalIllumination-CurrentLimitations
I guess as far as the idea of Metroid Prime 4 being held back to be better on a new system, for me it depends on whether there’s potential to introduce any new mechanics or possibilities that will greatly improve the game. I really don’t mind if it looks like a modern version of Metroid Prime 3 that isn’t obviously pushing the Switch to its limits. If it’s advancing what gameplay can be experienced with a Switch version then I’m happy.
If it also proves successful enough to get an improved port to a more powerful system then I’m even happier.