Do the anti-fungibility regulations and/or your sponsored relationship require you to preemptively submit your transaction information (eg card#->bank# mapping) for surveillance, or only in response to a specific court order? If the latter, what is your retention period?

Do you have any plans to add batching+noise to foil global passive adversaries? For example, I opt to keep a running balance target of ~$50 and today's charge for $34.56 is debited as $31.37 a week later.