Thank you very much for explaining this for our benefit here! Is it possible with your current system for a user to send a lot at once in different currencies to generate a large negative transaction given you are pulling the price from the available liquidity? For example, if someone sent 1000 SBD at the same time for ETH, LTC, BTC, Dash and a few others, would they lock in the higher exchange rate even though the liquidity might not be there?
I appreciate your response and hope what I've shared is useful to avoid getting exploited on the negative spread!