Its pretty simple I think... there just aren't enough teams. Sure you could make the number of teams invited smaller.. but remember this is HIGH SCHOOL soccer. The quality of the 1st round matches would be "better" but there are literally hundreds of people missing the experience of post-season play.

And just to defend a 4-5 team region. If a team doesn't care its not going to care whether its in a 4 team region or a 6-8 team region. So what if they make it to the playoffs.. they will get blown-out by a #1 seed. Being in a 4 team region.. I know i'm going to go to the playoffs.. the question is.. will I be at home and what seed will I be playing. Just because you are garunteed post-season play doesn't mean you take it lightly.