Both Voss and Richardson got senior coaching gigs after their time with Port and Schofield is the caretaker coach of West Coast now, maybe they're just much better at IDing coaching talent than us?Voss had blown up his reputation at Brisbane, Richardson wasn't anything special, at least not any better than some of the interstate coaches that have come to Adelaide like Teague or Milburn. Schofield already had ties to Port as a player. I don't think Port are much more of a destination for talented coaches than Adelaide. Maybe their record is a touch better than us but they're still the same league of teams drinking lukewarm backwash.
Off the top of my head we only have Teague as a former coach who got a senior gig, Port have Voss, Richardson, Nicks, Clarkson and Kingsley who all spent time at Port and got senior gigs.