I really think the plan has to be this......
Take advantage of the cap space they have this year and try to add two pieces to this team for a cup run....2RW and 2/3 defenseman, using any combination of prospects, Bjork, DeBrusk, Moore, Vaak (maybe Zboril) and any non first round picks. (Keep Studnicka)
Decide what to do with Krejci in the off season, based on where they finish, how effective he is and his contract demands.
If they somehow win a cup this year, maybe let him walk and let Studnicka slide into the 2 C role.
Summer of 2023, go hard after Barkov. Like all in, biggest contract in team history.