Liz would still blab at her forced wedding., but after Jason is arrested, in order to prevent a scandal, she'd drop charges and pay him off. He'd leave with Willie (but would they be back?).
Chris would still show up as a werewolf, but with no one to protect his secret, he'd be found out and killed.
Maggie would marry Joe.
The haunting of Collinwood by Quentin (and Beth) would precede, but without help he would succeed and David would die. Collinwood would be abandoned by the family who would move elsewhere. Collinsport would fall into economic ruin with the loss of Collins fishing. Maggie, Joe and Sam would move to New York. Vikci would get a job as a teacher in a school in Pittsburgh. The ghost of Gerard/Judah would come back and find competiition with Quentin in an abandoned Collinwood and would be really PO'ed that his plan to destroy the family was done by a later spook. They decide to haunt the place together to scare anyone, usually young people who've had too much to drink, to enter the empty house. Decades later, it would be featured on SyFy's Ghosthunters.
Carolyn would finally marry and get divorced. She'd get married again, and gets divorced. She'd marry a third time and gets divorced. After that, she becomes a scientologist.
Gerard