I've been vocally supporting the notion that longer events should be recognised as being harder to win. To use an example of two good friends of mine, Graham Bursnell won the 7-round PubFaux event, yet will receive fewer points for that event than Joel Henry did for winning the 3-round Haul of Eggs 2.
The potential option exists of lowering the number of players required for a maximum score, where the number of rounds equals or exceeds 5. This gives a slight boost to 2-dayers that won't have the same numbers but are more difficult to win, whilst leaving the 1-dayer as the staple of the rankings.