I think in hindsight you could come up with a combination of 5 first round picks (even without a top10 pick) that would make you at least think very hard about trading the 1st OA for them, even when the 1st OA is McDavid, Crosby or Bedard. It would be even more of a sure thing (again in hindsight) if you could include any picks beyond the 1st round.
As an experiment I looked at the Crosby and McDavid drafts and chose 5 1st round picks (2 in the 11-20 range and 3 in the 21-30 range)
McDavid vs. Connor, Chabot (or Barzal), Boeser, Konecny, Beauvillier (or Samsonov)
Crosby vs. Kopitar, Hanzal, Rask, Oshie, Niskanen (or Cogliano)
Problem is, we don't have hindsight before the draft, and the gamble is too risky. Statistically it seems improbable, that a team would hit on enough of the picks to end up with an adequate haul.
If there is a prospect of this level available at 1st OA I would not like my odds in a gamble of quantity over quality, even in a draft that is considered deep.