Not the quality of the rugby ... it was right up there (except that of the New Zealand team) but the determination of the event organisers, the Wellington City Council and the Police to impose all manner of restrictions saw the public voting with their feet which resulted in the once show-case event being played to a virtually empty stadium.
Wellington has done its dash. The tournament there has lost its mojo. It should be relocated to Dunedin one week into the University year or to Tauranga or to Napier. All three locations serve large catchments and provided the organisers say 'No' to the nanny staters and market the event as 'Party Time' (which is the attraction of 7s rugby) then the crowds will come flocking back.
Otherwise give it the flick to Fiji or Samoa. It would be a sell-out and they sure know how to party.