Just wanted to keep everyone posted on the status in terms of Delta's follow-up after Delta's original response back to me on April 11th. As of now, I have not gotten any new response except the last message received back on April 12th - which was: "I will forward your comments and concerns to our Flight Operations Leadership team for a review."
It is either they truly are working on it or they are doing a DUINLOP..."Delay until it's no longer our problem".