I found this nugget on the NPSL Bigsoccer board. The draw for the NPSL will apparently not be a blind draw. It will be seeded based on Points Per Game Average during league matches. Details below:
"As for the seeding for the National Finals:
It will go by average points earned during the season as each region plays a different amount of matches. Erie has a 2.8 ave, Sonoma has a 2.6 (these are off the top of my head), and Rocket City and the Midwest team (no matter who makes it) are tied with a 2.0 points per game earned.
The 3rd and 4th seeds would be settled by Goal Differential I believe, and we won't have that until this weekend."