I understand the wish to think like this, but unfortunately the reality is very different. Aho played only 3 games on loan in another Liiga team (Ässät, from Pori) and then he played only 10 games in the Kärpät A-juniors. Otherwise he played most of the season for the Kärpät Liiga team and eventually scored the Liiga championship deciding goal in the overtime of game seven against Tappara. His play was very different from Lambert’s already then, as it was very much based on very high hockey IQ and great passing, exactly what Lambert’s play isn’t about.
Aho was just physically quite weak and underdeveloped and weighed about 15 lbs less than Lambert does now. He wasn’t also an exceptional skater (although he is pretty darn good skater nowadays), so the physical weaknesses, and the lack of any clearly visible (unfortunately hockey IQ seems to be very unrecognisable, or at least underrated to a lot of scouts) elite strengths lead into him being picked only in the 2nd round.
I understand that you are not saying that Lambert would become as good as Aho, but also I wouldn’t expect a too much similar development even with their development pace, as they are so different type of players. There were reasons why Aho slipped to the second round, and those reasons were underdeveloped physique and only a bit above average skating, which wasn’t an appealing combination for NHL teams. There were also reasons why Lambert dropped to the end of the 1st round, but the reasons were very different from what they were in Aho’s case. In Lambert’s case they were the average or below average hockey IQ and the difficulties with him and his dad being so easily switching teams for him when things didn’t go his way, and they didn’t unfortunately go his way anywhere.