If this proposal is accepted in all RIR communities, should it take
precedence over the current global policy for >allocating address space to the RIRs? For instance, if the IANA free pool had more than five /8s left in it and >fulfilling an RIR's request for additional IPv4 space would take the pool below five /8s, what should happen?
Should the RIR's request be partially fulfilled, leaving five /8s in
the free pool, which would then be distributed as >per this proposal?
We faced the same question when we were writing the proposal "prop-051: Global policy for the allocation of the remaining IPv4 address space". We came out with a simple idea, that IANA should reserve the las allocations for the RIRs at the moment of the approval and avoiding this issue.