Bonus points would work well because they could either encourage close games, or reward winning teams for winning in style.
Quote ="littlerich"Trust me - you won't like it. 3pts for a win, 1 BP for >/=12 score difference.'"
The French RU Top 14 system seems to work very well.
4 points for a win
2 for a draw
0 for a loss. However:
1 BP for winning by a margin of 3 tries or more than the opposition.
1 BP for losing by 7 points or less. Given that is the margin of a converted try in RU, the equivalent would be 6 in League.
There is little chance of both teams scoring a bonus point with this system.