I kind of wish they waited another generation to remake the OG Xenoblade. This has fixed the weaknesses in the original's visuals, the character models and the textures up close, but it doesn't seem to be improving the vistas anywhere near as much as I'd like, and overall it still seems to have the worst visuals in the series. I guess it's to be expected that a remake wouldn't match up to a completely new game. Still will be a real treat for anyone who didn't play it before.
Don't think waiting a generation would do anything. It's not the Switch's power holding back the visuals of this, it's the amount of work.
They could make it look a lot better on Switch if they wanted to.