R238 Since you asked ;-)
With Victor Kiriakis having died now, I've been thinking one character they could bring into the fold would be his absent grandson, Tyler Wilkens (Kiriakis) -- Phillip's adopted-out son.
At some point, Justin would report on Victor's Last Will & Testament and note that, even though Tyler was adopted by The Wilkens in 2007, Victor didn't forget his grandson and left Tyler a nice little trust fund that he can begin accessing for college when he turns 18. There might be something more when he turns 25.
Justin then adds that while Tyler's last address with The Wilkens is known, the 16-year old boy himself is nowhere to be found!
The disagreeable Wilkens are no help whatsoever and appear very sketchy about what's happened to Tyler. They act like they don't care where "he's run off to" and want nothing more to do with him. Somewhere along the way, the remark, "He's no son of ours," is heard.
A private investigator is hired to look into the mystery and soon learns from Tyler's high school football teammates that the Wilkens are crazy fundies who kicked Tyler out of the house when he announced he was gay. In short, Tyler is out there somewhere all on his own. (Cue the homeless, gay teen PSA.)
This leads bio-daddy Philip and Grandma Bonnie to go looking for Tyler so they can reunite the boy with his Kiriakis-Lockhart families.
When they track Tyler down, the teenager eventually agrees to come back to Salem with them, but only if he can bring his current boyfriend, "Ste" (Steven) with him.
Seventeen-year old Ste is neither a victim of homophobia nor a runaway; rather, he became an orphan after his mother, "Sonia," died a couple of years ago. He didn't want to go into foster care at age 15, so dropped off the grid from Child Services and has been making ends meet with a small bank account that Sonia left him. He also works at an auto-body shop detailing cars. After Ste and Tyler met and fucked (it was lust at first site), Ste invited Tyler to stay with him in his dingy, one-room apartment. But since they're two teenagers in love, it's their own little paradise.
Besides Phillip and Bonnie, Steve and Kayla are also overjoyed to be reunited - not just with "Pocket" (Tyler) - but also their godson, Steven Hawk. .. And just like Tyler knew nothing about being a Kiriakis, Sonia Hawk never told Ste that he's a DiMera.