Chilla Wilson (44)
I think it has to be more than just a series of occasional one off pre-season contests for the 15 aside boys.
Something like the Big Bash Cricket with a Tour around the major centres (on FTA), perhaps based around the 5 Soup teams, plus 3 others ARU 7's academy teams to make up an 8 team tournament. 2 pools of 4 play 3 games each before knock out semis and finals. Have local schoolboys and womens 7's games going on to fill in time while the teams recover between games.
Play Saturdays and Wednesdays with the tour playing Sydney, Canberra, Melbourne, Perth, Brisbane, Adelaide, Gold Coast and Newcastle. Wednesday is highlights and Finals on FTA (SBS), Saturday is all day coverage.
Have it all over and done with in the summer period when there is little else sportwise on the tele.
Possibly run it again during the Wobs Spring NH tour. You wouldn't have the first choice Wobs available, but this would provide an opportunity for the second choices to demonstrate how good they are.
You could also play such tournaments over a series of nights. Say from 6pm-9pm over a few days. Would be ideal for tv and player welfare if this would be played in summer months. For week days this would allow people to attend.
But you wouldn't get the big names (i.e. the guys who might win us olympic gold) playing in a 7's league over a number of weeks in summer unless they were getting paid decent money to do so. I think you have to prove the concept of domestic 7's as commercially viable first. Have one big event to begin with. I wouldn't limit it to just the super rugby and academy teams. You could have NZ teams, PI teams, an indigenous side, privately owned teams etc. Maybe even invite a couple of NRL teams to compete. Fill up Suncorp or the SFS over a couple of days and if that's a success you could look to expand it in future (or look to create a separate big bash style league for domestic teams).