In single player (or a self hosted coop), a great way to get lots of building resources is to assault a POI and after taking the core, to remove all the wanted blocks. Far easier then going to space and mining sathium in huge amounts.
But it made me think about how that would work in multiplayer. Does a POI regen if someone takes it apart? When I first joined, I came across a couple POIs that I thought maybe were bigger at one point, but wasn’t sure. Didn’t seem to respawn anything, so I’m not really sure what was up.