A Kangaroos-Wallabies game would attract enormous interest and generate a huge amount of revenue for the game, which needs all it can get, at all levels. The rules proposal to split PTBs and rucks/mauls to each side of the field isn't the best though, it would be better to have 3 or 4 PTBs then move to rucks/mauls. The teams picked in the article weren't the best either, the logical choice would be to choose players with some experience of playing the other code:
Rogers, Tuqiri and Tahu are obviously not the best back three in RL, but they have experience at the highest level in Union, the first two playing in a Rugby World Cup final, the latter playing 6 tests; Cronk is an Australian Schoolboys RU representative).
KANGAROOS: Rogers, Tuqiri, Inglis, Folau, Tahu; Lockyer, Thurston; Watmough, Gallen; Civoniceva, Smith, Thaiday. BENCH: Perry, Mason, Cronk, Slater/Hayne
The back three are former Wallabies. Cronk, and perhaps the centres, have also played Rugby Union
Here's a potential Wallabies team with plenty of attacking flair, pace and power, all but two players (TPN and Mumm) have experience playing Rugby League (current Rugby team, RL experience listed):
FULLBACK James O'Connor (Western Force, Parramatta Eels Junior RL)
WING Drew Mitchell (NSW Waratahs, Queensland RL junior)
CENTRE Ryan Cross (Western Force, Sydney Roosters NRL, City Origin)
CENTRE Will Chambers (Qld Reds, Melbourne Storm NRL)
WING Digby Ioane (QLD Reds, Victorian RL junior)
FIVE EIGHTH Matt Giteau (ACT Brumbies, Canberra RL junior)
HALFBACK Berrick Barnes (NSW Waratahs, Brisbane Broncos NRL)
LOCK Sam Harris (Western Force, Manly/Wests Tigers NRL)
SECOND ROW Rocky Elsom (ACT Brumbies, Bulldogs Jersey Flegg)
SECOND ROW Stephen Hoiles (ACT Brumbies, Eastern Suburbs RL junior)
PROP Wycliff Palu (NSW Waratahs, Dragons Jersey Flegg)
HOOKER/DUMMY HALF Brett Sheehan (Force, Souths NRL, Manly/Broncos juniors)
PROP Tatafu Polota Nau (NSW Waratahs)
BENCH:
PROP Leroy Houston (QLD Reds, Asquith Magpies RL)
PROP/SECOND ROW Dean Mumm (NSW Waratahs)
HALVES/FULLBACK Kurtley Beale (NSW Waratahs, Mt Druitt RL)
CENTRE/BACKROW Tyrone Smith (ACT, Sydney Roosters)
Add to that guys like Gasnier, Gower, SBW, Wing, Anderson, Brad Thorn, Luke Rooney playing Rugby as well overseas.