They have said that if the refusals amount to more than their estimates, they would induce another draft. But, as you have said, it would be too convenient; they would not place non-volunteers on the list unless they wanted them out there.

A partner system is conceivable with the numbers provided. [And since people seem to know each other in the group, that will cause the least amount of friction.] Even then, picking terrains to engage on and situations that can be stacked in your favor would need to be done. So skillsets should be complemented as much as possible; a fighter with a medic or healer, or at least someone who can serve to enhance what you can offer.