I have just started playing in the SCA this season and they start the seasom with 4 x Two Day Games then 6 x One Day Games and finish with 2 x Two Day Games.
This provides the problem that we are in the block of 6 One Day games and some of the guys who arn't in the top 5 or 6 batters and bowlers struggle to get a go.
So for me Two Day Cricket is the way to keep people interested. It provides a lot more opportunities to make sure everyone gets a go.