While it sounds good in principle my belief a system that treated each team fairly would be best for the fans. Each club gets just as much games on FTA as each other (or close enough to it).
Well I believe that as the season reaches about the 3/4 mark, the teams that are lower on the table would affect the ratings and also if exposed on F2A, also effect their home crowds.
With this in mind, I have suggested previously that part of the season draw be locked in place with times, dates and television slots before the season begins. These games would be those that are guaranteed to draw a TV audience & crowd on an annual basis (i.e. derbies, rivalries, holiday games, grand final replays etc). These games would be scheduled from Rounds 1 to 20.
Each club could have 5 to 6 home games locked in with times and dates for fans to purchase tickets etc.
The other games would then work on the current floating schedule to maximise audience appeal with top of the table clashes.
Teams could be guaranteed 5 to 6 F2A games at the start of the season, with a minimum of 4 or 5 more F2A games to be scheduled to maximise big draws. Any additional games would be based on the teams performance (i.e. they're a top 4 side).
That would then come close to fulfilling the requirement of approximately 11.1 games per team in an 18 competition.