That's actually even more interesting due to the fact that precursors also did something similar to your hyperspace scenario- they were capable of forcing fleets outside of slip space, among other things, and though they certainly didn't make anybody retreat from the stars, they did torture space faring civilization for quite a awhile. I think it's clear that there's more inspiration from SW inside halo than I originally thought. Disregarding this, the Disney situation does suck. Did they say it was outright never going to be touched again, or did they just kinda shove it off to the side to shift focus? I can't see why they'd completely remove something as interesting as the celestials when you describe them the way you do.