The Weatherfield actor hopes that his character Owen Armstrong will be a central part of his daughters' future surrogacy plot.
"What I'm looking forward to now is settling into hopefully a longer storyline, because it just gives you more creativity and it gives you somewhere to go," Puleston-Davies hypothesised to MSN.
"It grows, it gets bigger and bigger and it becomes more involving, and it could possibly even involve a bigger family, so we're all really excited about that."
Teenage mum-of-one Katy next Thursday (August 16) offers to become a surrogate mother for her disabled sister Izzy, who lost her baby with Gary Windass a fortnight ago.
The Welsh actor also disclosed how Owen discovers Izzy and Gary's plan at the christening of Katy's son Joseph the following day, teasing: "I think it went wrong fabulously at the christening.
"I was very excited by the fact that they decided to have Owen's discovery of the surrogacy care of his youngest daughter to happen by whispers during the service. I thought that was a wonderfully clever dramatic choice."
Coronation Street's surrogacy storyline kicks off during next Thursday's episodes, before dominating Friday's double bill.