Origin is such a huge revenue draw for the game but with some of the braindead decisions that the powers that be make I wouldn't be surprised if this one day did happen.
Personally if it was me making the decisions I'd have a designated representative round 3 times a year with Origin as the "main event" of the weekend. New Zealand and other Pacific Island nations could play an annual best of three series against a team or alternatively just swap them around every year plus international games could be played as curtain raisers to the bigger games.
Something like:
Friday: Women's Origin/Fiji Vs Samoa
Saturday: PMXIII Vs PNG (Featuring the best Aussies who didn't make Origin), New Zealand Vs Tonga
Sunday: Origin
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It becomes a magic round of sorts which is having great success and with all those teams it'd be absolutely can't miss, the international game has had 3 match series' before and they've always been very fun.