James was a bully. But he was also a good father and husband.
Sirius was a pretty ******** horrible person. He was also a victim of his circumstance--and they were pretty shitty--but that doesn't excuse him for treating his "inferiors" like s**t. He was not a good godfather.
Remus was not the innocent bystander of the Marauders who trailed behind them worrying his hands as they bullied their fellow students. He may not have been the instigator of the Marauder's bullying, but he was witness and an accomplice. He had plenty of reason to not push his friends on their behavior, however, but that's only an explanation, not an excuse.
Tonks' character was destroyed in book six as she went from being a strong female character to being Remus Lupin's pining ex-girlfriend to girlfriend to wife to mother of his angst inducing child before finally succumbing to a plot hole induced death. Her abilities and skills as an Auror and Metamorphmagus were wasted.
Arthur Weasley should have died in book five.
Angelina marrying her dead ex-boyfriend's identical twin brother creeps me out.
I like the name Albus Severus Potter even if naming your son after the teacher that bullied you in school because he was in love with your mom is really ******** weird. James and Lily were terrible choices, however, but they make sense given the wizarding world's love for reusing names.
Ron and Hermione are not a good couple and Hermione comes off as mildly abusive and majorly controlling.
All is not well and no one learned anything except
maybe Harry.