As in Lian Harper, Iris and Jai West?
DC has shown Iris in Dc Universe Rebirth as Impulse in her dad's memory. Is it possible that their bring any of these kids back? I think it's more likely for the Flash kids as it helps differ Wally from the other Wally and the other Flash. Then again Linda doesn't seem to know him so they might need to start over.
Lian would seriously change who Roy is although Titans Hunt basically ignored any personality Roy has anyway. The new Cheshire is also way creepier and annoying than the original. Assuming she hasn't had things retconned. Would DC really bring back kids when they have been reluctant to let characters marry? Well their letting Mera and Arthur get married again so there's some hope.