So they're bringing back Skull Town as an Arena map. But they can only keep it during the event cause apparently "BR Arena maps actually load the full BR map " So...they can't be bothered to actual...
@SheepsKing Load map and assets into 3dmax or whatever they use, in overview click n drag border over selected area, copy/paste then delete remaining. Import into source engine with some tweaks and Voilà.
It'll obviously take a little more work than that but for someone who specialises in this working for a billion dollar profit game, there's no excuse.