"Left-leaning parties tend to support equality while conservative parties lean toward stability. . . Even Ziblatt thinks the GOP is too far to the right to be brought back towards the center. . . You either need to create a party to displace the GOP or work for reform from the inside."

How about a party that promotes equality of opportunity instead of equality of outcome? But significant election reforms are essential for any new party to compete with the duopoly. Check out the emerging Equalitarian Party: https://www.usep.net/