I just know they tried had to turn Tim Gibbs' Kevin on OLTL into Gary, I guess - made him a dark, glowering alcoholic, pushed a thing with Robin Christopher as fellow alcoholic Skye. Jill Phelps seemed to be flirting heavily with the idea of pairing them (I think they may have kissed at one point) but didn't go all the way, for whatever reason. And Kevin's drinking issues, while they existed somewhat later on, were never as prominent or serious as the Gibbs run - despite (IIRC) attending AA meetings with Skye in the JFP era, he was never confirmed as a full-on alcoholic.
Supposedly Jill fired every woman he was paired with (save Gina Tognoni) for not taking off with Gibbs. I know Laura Bonarrigo was vocally upset about his replacing Kevin Stapleton. There were other rumors about the situation with Gibbs but I don't know if they have any basis in truth.