You still have to play Kopitar with somebody. And Laferriere is still growing his game.
If the Kings lose to Vancouver, I just don't see it as being due to Kempe playing with Kopitar versus Byfield.
It's just reinforced by your second to last paragraph. Fiala - Kopitar - Kempe had a few good shifts then he went back. Would you prefer he kept that configuration for the past few weeks, and keep Byfield with Turcotte and Laferriere?
Hiller has done a good job for the most part (my biggest complaint is how they're managing Clarke). It looks like he wants to try to get multiple lines going, and when he needs a jolt, he has a line he can try to overload to get some scoring.
It's like with Edmonton. Their two best players are McDavid and Draisaitl. Ideally they can be separated to have two scoring threats, but when more is needed, they mix things up.
Nothing wrong with trying to make things work as long as you show adaptability in-game.
I see your points but it's a much different situation than EDM in my opinion. Edmonton has a good/great first line no matter what (because they have two of the best players in the world to carry that 1st line). If they load up that first line with both McDavid and Draisaitl it just becomes even better.
The Kings on the other hand, don't really have a first line to begin with (or at least haven't for the last month or two). Kopitar has been struggling for almost 2 months now and they've been rotating forwards at LW on the first line for the last 5 games or so.
So instead of trying to establish a legitimate 1st line that can carry your offense (exactly what 22-55-9 has the potential to be), Hiller is electing to continue to cement 9 and 11 together and rotate forwards on their left side. Leaving no room for consistency and chemistry building.
I think it's important to establish a first line in the NHL. And have 3 very good forwards who you can point to as your top line. The Kings don't have that. It would be a much different scenario if they did have a solid 1st line and then just chose to load up that 1st line at times when needed but that's not what's happening. They have no 1st line and just scramble things constantly until they're trailing and then they ice what should be their first line anyways. It's reactive as opposed to proactive. Not a great approach.
Also, re: Fiala-Kopitar-Kempe. Yes, I would've kept them together for at least another game or two after that game where they looked great and helped the Kings come back. I would've gone to Foegele - Byfield - Laferriere as the 2nd line and would've bumped Turcotte down to line 3 with Danault and Moore.
And re: needing to play someone with Kopitar - Yes, Laferriere's game is still growing but I absolutely think he can be an effective linemate for Kopitar. He's a very hard working forward who does a lot of little things right. Foegele or Turcotte could be nice options to round out that line. There are other forwards who can play with Kopitar.
You're right that there's nothing wrong with making changes and being adaptable but when you make changes that clearly work (REALLY) well there's no need to then re-invent the wheel again or go back to the old strategy that wasn't working to begin with.