in addition to what I mentioned back then, the Vong are basically the alien invasion trope. yet it's already a galaxy full of aliens, so they come from another galaxy, and it's a stretch. I think they could work if either 1. they're massively nerfed, and are just another species causing a bit of trouble, or 2. the events are placed in the distant past of the galaxy. that way, they wouldn't shatter the universe right after the OT.
that's not the case, I have valid reasons for being anti-Vong. they feel like the creation of a WH40k fan who hates Star Wars.
hope you don't mind me upping an old thread btw