@roland reminded me that our other, probably more significant, concern at the time was that, to embed SCTs in X.509, we'd have to block issuance on getting SCTs. In the absence of enforcement, that felt like it would put pressure on availability and issuance latency without a corresponding gain. Of course, with enforcement on horizon that calculus shifted. We've been happily surprised by how little CT submission has affected our availability. We have had some small outages due to CT submission but overall it's been fine.
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