I've always felt the periphery doesn't quite play by the rules... what's true for a Fronc world or a Far Looker colony will not be the same for an average Maurian or Outworlder planet, whereas pirate planets, the Concordatian worlds and the Canopians all have their own unique economic quirks both up and down. The only place I would apply anything standard from AToW or elsewhere are IS-power periphery worlds, and maybe the breakaway broken wheel nation worlds.