Mr. Flanagan, it is so convenient of you to forget the CPC's negative portrayal of Mr. Trudeau because of his youth.  

Mr. Scheer owes his success in the leadership campaign to picking up more of the votes of exiting candidates, especially Brad Trost and Erin O'Toole, than Mr. Bernier.  Those votes represented the more socially conservative members of the CPC.

Before you opine about 2019, you should really think about how Mr. Scheer is going to knit together the clear division in the CPC.  The final result was not a decisive win as Mr. Scheer achieved just over 50%.  The second major task Mr. Scheer faces is how he will distance himself from the "Harper Lite" label.  

Disappointed Trudeau voters as you describe are unlikely to turn to someone from the social conservative side of the spectrum.  Sunny smiles or not.