There is no reason at all to " increase refugee quotas or scrap asylum". 
Trudeau has already made his headlines and gotten his grandstanding over with presenting Canada as the opposite of the U.S. trying to protect its borders. 
Perpetuating the Canadian brand is all that matters. No one will ever know his offer was more fraudulent than his 'Canada is Back' humanitarian gesture of bringing in 20 or 30 thousand Syrians.