I admit that I am very high on Crozier and he is unproven—if not for the NTC, I’d be willing to let Cernak go and see what Crozier could do, while trying to fix the atrocious bottom/middle six.
In the event Crozier doesn’t hold up— look for RD at the TDL. It’s all a moot point, though.
Looks like you understand how unwise it would be to trust Crozier to fill a top 4 role with only a handfull of NHL games played. The concept of trading Cernak by itself does make sense due to his injury history, but it would need to be in the offseason when reconstructing the roster becomes easier.