I’ll throw my hat in the ring.
I’d prefer my services in exchange for a (small) fee – to set precedent with there being some value in servicing these roles, and establish a concept of consideration.
Regular small payments / grants (even 1 NBT or equivalent NSR) could also be used to determine / assert / record in the blockchain who is ‘in’ and who is ‘out’
My preference is for 2 groups – so the same team is coordinating intervention on each side. i.e.: what confusion could be created if both tier 4 and tier 6 are mobilized, and also the movement of funds between tiers (where possible)