There needs to be a real, dramatic reason [in] present-day why any of these characters would be relevant to our story.
I can say that, going forward, we should expect more characters from The Karate Kid films to return but I can’t say who or when or pretty much anything beyond that.
We view that as all characters who live in our universe and, at any moment in time, have the potential to show up as long as they’re relevant to the present-day story that we’re telling and don’t feel like they’re thrown in there for cameo purposes or for simply for nostalgia’s sake.