I still don't think so. He's played LW his entire career, on the Rangers he's stuck behind Bread and Kreider, that won't change because they're both there long term. This year is really the first time he's ever had a chance at a top 6 role and it's on his off-side, that's not an easy shift to make, especially at the NHL level for a 22 year old kid.
Yes this is a lot of time spent making excuses, but like.. what else is he supposed to do. Some ppl are saying that he should be outplaying Panarin or Kreider as a 19-22 year old... please.
I think of Laf as a 1st overall pick who's gotten late first round opportunity. Given the situation his development hasn't been unexpectedly terrible, it's just been a really bad situation for him. More importantly, no easy solution because the Rangers are / have been win-now, they're not going to give reps to some kid just so they can be a worse team with Panarin or Kreider out of their top six.
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All that to say, 100% agree that a trade clearly would make sense. I'd take him on the coyotes in half a second, stick him with one of your top development centers (in this case, Cooley) for at least 10-15 games and see what Laf can do with actual opportunity on his preferred side. Pretty sure every rebuilding team would do the same thing wrt Laf's development