You could literally say this about anybody they pick. The simple fact is, Cooley offers us nothing we don't already have. How does he become a superstar and clear cut best player when he likely doesn't get a PP role that fits his strengths since we have two different options that are clearly better? That's the point. Unless we hit a dead end in contract talks with Jesper Bratt and there's no way he's coming back, there's no place for Cooley to become that "if" that you just described. There is a such thing as too much of the same thing.
This draft's forward crop is separated by a razor's edge from Slafkovsky to Nazar to Cooley to Savoie. When all things are equal, you absolutely take into account the needs of the team and the system. This idea that you just throw out need as if it plays no part in the evaluation process is just pure fiction and naive.
Ya, I factor this in when looking at potential acquisitions at the NHL level. Boeser scored a lot of PP goals, but if we were to acquire him, he would take away PP time from either Bratt or Hughes. Fiala on the other hand does most(not all) of his scoring 5v5.
People like Nuke, and if we were to acquire him, he could play net front on the, PP. Not sure if he even played that with the Avs, but that could be a spot where we could get even more out of him then what he was producing in Co. (I acknowledge the issues with Ruff, noting this merely as an example).
So yeah, Cooley, he'd play either the Bratt or Hughes role. Even if he were to win top pp minutes it would diminish the impact of the other guys. Could Slaf be a net front on the PP? It is something to think about, especially at 2nd oa.
Now whatever D we might draft probably wouldn't get much PP time either, not any time soon at least. But it's less of a concern for D, imo, but we should note that if we draft Jiricek he's not going to be racking up pp points. If anything the less glamorous PK would be a nice addition from any potential D-man draftee.
So yeah, team construction. Definitely a thing in my book.