The thing about Heather Tom as Kelly on OLTL is both she and Dan Gauthier as Kevin did end up being popular with the audience. Fans were not pleased when Brian Frons cut them both.
Kelly as a character hadn't really been popular since the late '90s, after Nathan Fillion left as Joey and once Kelly did the hit and run that killed Blair's baby. Her pairing with Timothy Gibbs' Kevin under JFP was also extremely unpopular and turned the audience off of both characters. When they were reintroduced in 2003 it was a departure, but Michael Malone and Josh Griffith made a bold move: They leaned into the problematic nature of the characters' changes instead of trying to whitewash it all. Kevin and Kelly under JFP in 1999-2001 had been, put simply, pious hypocrites who had left Joey out in the cold to have an affair and present their romance as a great love story. (They were so widely disliked that when JFP left and Gary Tomlin took over the show didn't bother giving Tim Gibbs, playing a core character, an onscreen exit.) When they returned as played by first Gauthier and Tracy Melchior (almost certainly a placeholder for someone) then Tom, they were the same: Pious hypocrites who had parlayed their social standing into political prominence. The difference between the two creative regimes was the writing treating them much more honestly. Kevin and Kelly in the post-JFP 2000s were treated as a dysfunctional, messy relationship from the jump.
I enjoyed Heather Tom immensely in the role because of who Kelly was and because she and the writing leaned into it; Kelly was a self-pitying hypocrite, running from a troubled family and childhood, who hid behind her social standing to get what she wanted or what she thought she wanted (Ace). Fans also loved Gauthier as Kevin because he sold the truth about who Kevin had become; a smarmy political scion who deep down was going to be broken apart by events both of his own making and beyond his control and be rebuilt as a character. It was only when Kevin and Kelly were taken apart and deconstructed by the events of the baby switch storyline that they became sympathetic and viable again. They became OLTL's answer to Alan and Monica Quartermaine and, before their ignoble exit, were a popular pairing together with the audience, who decried the actors' firings. The complete antithesis of where they'd started under JFP with Tim Gibbs and a perhaps less enthused Gina Tognoni.
OLTL tried to bring Gina back later and simplify the character bringing Kelly back to 'her roots' as a carefree screwball comedienne. It didn't work over a decade later, with Gina having since played a much more complex, nuanced dramatic role on GL as Dinah Marler. Nobody bought it and the return failed. But the one moment she really worked when she came back in 2010? The few days they gave her with Dan Gauthier.