I don't see a problem, Wings brings them in one by one now. After this season Ghost is out and Ed is in. After next season Fabbri out, Kasper in. After next Kostin is most likely gone too, if Fischer and Perron are still here after next season, Mazur or Danielson pushes them down in a lineup. I see Sprong getting a 2-year deal and if he keeps this up for next 2 years, he is going want to get paid most likely so might be gone by then. And if 2 years from now Perron is still here, then he might be close to retire. Either way thats another spot open.
Whats the rush? Team culture is great and they are winning, it's better to keep that going on and it's also going to be easier for the kids to jump in a team thats winning and learn by winning, than learn and struggle.