Luther gets his body back to how it was before the trauma but the hurt remains and he quite literally feels weaker and lost the woman who accepts him for him.
Diego is a hero! He saved the world. He has a partner and a child. And yet he is now just ordinary and he cannot take it.
Ben is alive! And alone! And hated!
Five saved his family, he saved the world, he gets to retire. Except he finds that the world isn't good just because it's saved, and he finds that something is missing.
Viktor gets his revenge. His family are all ordinary. But at the price of his own ordinaryness.
Lila gets her man, her child, her freedom from her mother and the commission. She loses her new family, her sense of power, her sense of self.
I love that they cannot just move forward. Something wonderful is how their powers represent their trauma. They can't leave it behind. They have to pick it up and learn to LIVE with it or they cannot be happy.
The horrible tragedy of getting what you want.