On 10/30/2015 10:43 PM, Rusty Russell via bitcoin-dev wrote:
> By that benchmark, we should aim for "reasonable certainty".  A
> transaction which would never have been generated by any known software
> is the minimum bar.  Adding "...which would have to be deliberately
> stupid with many redundant OP_CHECKSIG etc" surpasses it.  The only extra
> safeguard I can think of is clear, widespread notification of the
> change.

If the policy of Bitcoin Core development includes a willingness to
makes the utxos created by software other than Bitcoin Core unspendable,
then it certainly merits clear, widespread notification.

Even if that is actually a good policy, the reasons why should be made
abundantly clear.