The problem union has with taking a month off is that a lot stop caring/forget about the super 15, in aus anyway.
So the nrl would be reluctant for that.
So we need to have a calendar that suits origin.
I would prefer see origin played over 3 consecutive wednesdays.
When the rep weekend in may is on, every pacific nation should utilise this and organise a test match.
Then at the end of the year, have the 4 nations, pacific cup, euro cup to suit the 2 pro comps.
Its the least amount of trouble for the nrl and will see every nation increase their number of matches and help get players to commit. If radradra new he'd play test for fiji in may and a pacific or 4 nations comp in october, thats gotta help keep him interested.
But at the end of the day, so long as aus offers a tonne more cash, players from poor pacific backgrounds will choose to play for aus. Just look at the wallabies and all blacks.