The Leafs prospect pool is odd because there are like 5 sure NHLers in the next 2 years but barely anything else.
Cowan, Minten, and Grebs are basically NHLers within 2 years, and look like guys that will be at least middle 6 forwards.
Niemela and Tverberg probably in 2025-2026. But right now these two look more like bottom of the lineup players.
I agree that Niemela is probably bottom pairing to start. He could end up being a middle pair d but that is a long way off, like years. He is similar in stature to the Preds Carrier. Tverberg is probably an energy 4th liner when he arrives, but based on work ethic and trajectory could be a 3rd liner in 3 years. So when scouts value these players this low its because when they arrive that is where they probably start. They are not necessarily negating that they have higher ceiling. It is just that their higher potential ceilings are a ways off.