I'm talking about getting Your blue line drafted first, not only the blue line.
the order. not the result.
There is a fallacy (not sure if that is the right word) in your theory you need to question.
Do you bypass Marner to draft Hanafin, Provorov or Werenski?
Do you bypass Nylander to draft Honka, Sanheim or DeAngelo?
Do you bypass Matthews to draft Juolevi, Sergachev or Bean?
I think you need to draft BPA and if you happen to have a glut of talent on the front end hope you can trade from a position of strength, if you see down the road you have a need, then trade.
My personal strategy would be to draft BPA, if there is a toss up between center and winger, I would draft the center. If there is an immediate need for d-man on the big team, I draft BPA and hope I can move the BPA for a NHL ready D-man after the fact.
Defence and goalies typically take so long to develop you either have to have extreme patience or hope some of these guys take the fast track.
I don't think the theory is wrong to build from goal out but if the strategy is to build from the goal out only through the draft and you take into consideration the long time it takes to develop D and G , IMO that is a 5 to 7 year time line before your team is ready to be competitive.