Hi Brian, cool, congratulations on making it this far! Do you think the several hours latency to the bank account deposit is going to expose people to too much exchange rate volatility?
Since Bitcoin is unregulated, if they wanted to I guess Coinbase could lock in exchange rates at any time they choose (e.g. the time of the transaction) and then do the exchange later. Since that effectively shifts the currency risk from the merchant to Coinbase, they could choose to charge extra for such a service.