Was looking at the PJ logo and thought " Oh, the radioactive symbol has 3 sections indicating the 3 possible nuketown versions " And the Warden skull in the center got me thinking…
What if the 3 nuketowns all connect in the center to the broken down Hellscape arena (warden's lair) of which we see a glimpse of at the end of Astra Malorum: What if the PJ Logo is actually how the map is laid out?
There is an arena in the center that has 3 rifts/teleports to each Nuketown but could possibly be opened up once you do something in all 3 Nuketowns (maybe being also interconnected with portals)?