<quote>you've moved the legacy 32-bits from a suffix, in one corner of the address space, to a prefix. So you don't actually fix the exhaustion problem, because now there are far more addresses, but they're still all allocated to someone already. So your whole plan just wastes everybody's time. Ouch.</quote>
Wait, could you back up and step through that again for me? I fail to see why more addresses is not a step in the right direction, even if they are "already allocated to someone". Reallocate, maybe? Share maybe?
I'm labelling your argument "bifuraction" for the time being.