I think Han instead of being Frozen he should have die in ESB being killed by Boba Fett his character would have closed in a good way but the problem is if Han died Vader redemption would be more difficult because Luke and Leia would not have forgiven that Han had died at the hands of the Empire if Han died i think we would not have seen Vader turn to the light side and he would have been still a Villain until Luke defeated him
Also, Lando definitely wouldn’t have been forgiven, either.