I agree to an extent. I think it's a good idea to try different combinations for a bit, especially when there are a number of guys that need to get going. These particular lines are new and I'm looking forward to seeing what can happen.
Unfortunately ZIb is going to have to develop in the frying pan, and as a second line player on our team, we need to do what we can to get that line to be a threat.
I agree with trying different combos when the players are not producing as expected or wanted. I too am looking forward to seeing what these new lines can do, but I doubt Ryan flourishes with Legwand as his center. I hope I am wrong.
Based on the games I have seen, Zibanejad seems to be concentrating on his defensive role and thus negatively affecting his offense. Plus he seems slower this year. I do not know why he is slower. I suspect coaching may the reason he is concentrating on his defensive play.