I think it would be really cool to do a pairs challenge, where a minimum and maximum of two SM members work on an entry together.
a) You'd get cooler and better entries, because two people might have complementing strengths
b) Much more likely to finish, because you wouldn't want to let the partner down
c) Teaches teamwork and production skills (rare that a studio is one person)
d) More people might enter because they might not be as intimidated with a 2-person team
Just an idea