I find 3 deputy leaders kind of weird but it remains to see what their role will be. If Mulcair is out of the House a lot because he is touring, they can cover for him and cover the regions that need representation. Only Leslie has French if I am not mistaken.
If Mulcair's plan for the deputies is to treat them like "lieutenants" (i.e. send them out on tour), then this may have proven a shrewd move. Davies never struck me as the lieutenant type though. Maybe she will be his number two in the house and the others do outreach. That would be interesting. Mulcair could focus on the prairies and Leslie & Christopherson could focus on the other regions where the NDP needs growth.
This move also makes me wonder how large the new shadow cabinet will be.