It would be more suitable for your wife to give birth in canada . Because the child will be canadian by birth and you won't need to add himto your permanant residency application .
Your application will be more complicated if your wife give birth in your home country . First, you have to add the baby , as soon as you will do they will understand that your wife is no longer in canada . They will ask to fill again the background schedule (Annexe A) to send again another attestation of police clearance . And they could send another medical request for your wife and your child . As they are no longer living in canada , CIC will want to have more information .
The logic is sample , If they are in another country CIC want to know if they commited a crime after leaving canada , if they contracted any sickness after leaving canada . And also , they might be an interrogatiuon about who is suitable to treat your application . As the application of your wife and your future child should be transferred to the VO of your country . And yours should be treated in ottawa .
This will probably delay your application
I kindly advise you to call CIC and to ask them . Also , may be you could think about the way to bring back your wife to give birth in canada .
