We got a survey from the NCBCA about playoff format and there were several options. One of those was the first week (round 1 and 2) be single elimination and then round 3 and on be best of 3. That's just one of the examples we received as well as the 3 game series throughout. I think most of us want a 3 game series so if we happen to catch that team with that dominate arm, we aren't out of the playoffs.
Wouldn't mind the way SC does it with different regions having a 4 team double elimination bracket and on from there.