Maybe explain what you mean by “cryptographic attestation”. The protocol I describe there allows any user of a pool to fully audit the payouts the pool is making and, if the pool cheats, publish a concise proof of the issue. It is also incredibly simple and doesn’t have much overhead. The only disadvantage I see compared to this or some of the other protocols described in that thread is that it has some time lag, but as I described above, pools in practice have quite a bit of time lag before they can do payouts anyway, so I believe this point is moot.