Even a mini league could give a better weighting (and SKY could get an extra 2 semi games per league - 6 instead of current 4, each team playing 3 games instead of 2).
3rd plays all games at home against 4th,5th,6th
4th plays 3rd away and home to 5th, 6th
5th plays 3rd, 4th away, home to 6th...