One of the positives for having Scheer as leader is his support in caucus and his collaborative nature.  If he is smart, he will allow moderates like Raitt and O'Toole to influence policy (e.g. Raitt's fiscal and health care plans, O'Toole's defense and trade plans).  By the same token, the potential pitfall being too much collaboration with the social conservatives (e.g. Trost and Lemieux).  Time will tell.  At least the negativity and divisive tone should be diminished.