#smbc

Henry Crawford, Mansfield Park - sleeping with a married woman is still pretty bad, but it's no longer a crime (he would have been charged with Criminal Conversation to make the divorce go through and paid a fine). His punishment socially would probably be similar, though Maria's would be far less

John Willoughby, Sense & Sensibility - again, Eliza is probably above the age of consent and if they used protection, no worries. Otherwise Willoughby is on the hook for possible child support (he would have been in the Regency too, and the courts liked to decide in favour of women in this case so they didn't have to support the poor themselves). Icky, but not as bad as he was in the Regency for ruining Eliza.

Mr. Elliot, Persuasion - Mr. Elliot's crimes are cruelty to his first wife, convincing a friend to spend above his means, and not helping a widow in court. Hopefully, Mrs. Smith wouldn't have as much difficulty with her husband's will in this day and age, so that crime may be gone, but the others remain basically the same or worse. Hopefully his wife would take her money and leave him!

John Thorpe, Northanger Abbey - his only real "crime" is slander against Catherine Morland, but I doubt anyone would charge him for that. He is the worst though and would be just as bad in the present.

Frank Churchill, Emma - his gossip with Emma is less cruel as Jane's reputation doesn't hang in the balance. He's still a jerk for toying with people's emotions.