I agree, I think Laff is finally comfortable while playing on a line on a consistent basis night in and night out instead of things getting changed up every 3 games like his previous seasons.
He is starting to come into his own, should end with 20g and 50pts with like you said almost non-existent power play time.
I think he eventually gets to a 30-35g 70-80pt player (with a 40 goal/90pt season mixed in).
Trading him now unless it was some insane overpayment would be terrible. I think he, Miller and Fox lead the next core after Zib, Panarin, Kreider is done.