I don't think Nolan is selfish in wanting forgiveness. Wanting forgiveness is a natural thing. Look at Mark and how he treats Nolan. I can't say Mark has forgiven him completely, but he defends Nolan from time to time.
I expect part of next season will involve Debbie and him getting along better. As Nolan said, Debbie wants to forgive, to give him a second chance.
Cecil? He's pragmatic. He doesn't have to forgive.
Earth? I don't know. Especially if the Thragg plan becomes public.