I'll tell you what's wrong with the Fiala line: Fiala 3.5% shooting percentage. That and PLD producing at a 45 point pace (the same pace Blake Lizotte is on currently).
With Fiala - He's a consistent 20+ goal scorer and a VERY skilled forward. He's getting chances and hitting a lot of posts / getting robbed quite a bit. The goals will come. That alone will increase the productivity of that line pretty significantly.
With PLD - There's more concern IMO but I believe he'll get it going.
Laferriere is not the problem on that line. In fact, there's been quite a few nights where he's been the best player on that line in terms of 5 on 5 play. Also, Hodgson?????? Come on now.... The guy is barely an AHL player let alone an NHL player. Loved the hit on Stone but let's be serious.
Ultimately though in general, just keep it rolling. This team is consistently dominating opponents and scoring more than nearly every other team in the NHL.