In fact, I think 20-20 matches must be started at the domestic level right away. At a minimum it will help identify key talent for the 2007 World Cup. India still lacks a good all rounder. 20-20s might be the road to finding this elusive player.
In this fast paced global economy, the age of instant gratification, even an ODI is fast becoming a luxury. Twenty-twenty matches have started to take off so much so that a World Cup is being planned. India, Pak and SL have been slow in adopting this. Its in their best interest to start early. These three countries are key to filling ICC coffers, so its unlikely that the ICC can pull of this World Cup without their active participation. In any case, as this form of cricket gains acceptance, it makes sense to adapt to this sooner rather than later.