First of all, I like everything you said in your post. Especially the idea that Relec plasma should be used to construct star gates, not warp beacons.
My understanding is that schematics will be wiped, which was strongly indicated by the "internal discussions" of the developers. I also think that planets will be redone, so static constructs on the ground will be wiped. You will probably be able to make blueprints of those constructs, but all the resources would be gone . I think there is a slim chance that space constructs may survive, which would include warp beacons that are in space. That is why I was still trying to make them. It was little effort, just click a button every 26 days, to make more. Mostly all I have been doing is checking the progress on the beacon being crafted, and making sure the support industries have not crashed, which they do way to often.
I do not know what the guys in my corporation think. They went from being very excited about having beacons to only logging in to pay their territory taxes. Territories with mining units are being converted to headquarters. When I get into Discord, I see that no one is really playing DU. People are talking about shutting down accounts.