I think they changed a lot. I felt bad about that because I loved Jon's character and intrigue but hated the "soap" he made with Barbara and the rest. That's when I knew he jumped from drama to soap or maybe never wanted that. All the business dealings were lost with Ashley and that did seem to push him over the edge so to speak. He thought he lost everything and was leaving money "just in case" to his family. He left equal amounts to all, I don't think he left Barbara more. Really Delilah got more since all 3 guys were supposed to give theirs to her. She got gifted a lot in her taxes that year. lol I also feel if Deliah met with Jon and showed him love and compassion, not leaving him, he might have changed his mind, IDK. They deliberately had you see Jon know and find Eddie's necklace but left the guilt to be there to break up the duo later. I just laugh though when people feel sorry for her when she was leaving the kids and Jon a day earlier. In some ways, the kids would grieve and be angry at her for being with Eddie, Jon's death just made it worse. They couldn't commiserate with him. I feel Sophie would have acted out if her dad was alive, Delilah still cheated, didn't get any counseling or try with Jon (why are you pulling away?) still picked his best friend, still slept with someone who came over regularly and taught her guitar. Maybe guitars would have been spared, but not her words.
I blame Delilah for not knowing (or caring) about Jon's past. She couldn't have been very curious. I have seen pictures in my husbands albums or shoe boxes with letters or pics, old friends and girlfriends when we met. He told me many stories, good and bad of before of his past. Nash wants us to believe she took Jon from that day on and he was just hatched.
No one googled in that show at all. You'd think it was 1970. You can put in an address and find on free sites, who lives there, who lived there before, sometimes who lives with them. Barbara mystery was kind of dumb no matter how you looked at it.