not a dyson sphere that's just ridiculous, but some sort of giant construct that cou can't actualy get too close to, it would be lore driven, not an actual construct you can control.
Now that I think about it it probably doesn't play well with the ideology of "everything is a construct." It'd still be nice to have some sort of global lore progression hmm.
edit.: the point is not to take away the freedom of a sandbox game, it'd be a mix of best of both worlds.