Stop making gauntlets with obvious winners. Why on earth you would put Camilla in the same gauntlet as characters like Subaki, Beruka and Palla is so bizarre to me (Not saying they're bad, but that they're not nearly as popular as Camilla) and shows a lack of awareness, despite them literally having a list of our favorite characters.
Make some kind of "comeback" mechanic for teams that are losing by x2. Once I woke up the morning of Camilla vs Cordelia and saw that she already had an 8 million lead, I just gave up, because comebacks in this gauntlet just don't really happen.