I'm not sure why you keep trying to infer all these unrelated points to your Drouin love that have zero to do with the argument at hand.
Drouin is no doubt an interesting prospect. No one is denying that. It's at what price? If awuiring him leaves you with a massive hole on your D and a in your prospect pool and doesn't add any immediate relief which is goal SCORING (he has 6 goals in his 90+ game NHL career) then how does this help the Habs.
Even from a long term perspective, 3rd overall picks are hardly a slam dunk and he hasn't shown anything to show he'll be otherwise. Going over this list in retospect, there aren't many names id give up McCarron, Beaulieu and a 1st for at any point in their development, much less at such an early unproven age.
http://www.mynhldraft.com/nhl-draft-picks/3rd-overall/30509/
So not sure what the incredible need for Drouin is now just because he demanded a trade rather than play through his contract and play for his team and coach which ALL 20 y.o rookies should do. I can't even remember if an ELC player has ever even asked for a trade in the past. Considering who else is available and can be had for the same or less and would be more impactful, id pass on Drouin at that price.