There's really no way to minimize separation. Hardships aren't considered in processing times. If the person sponsoring is a Canadian citizen, then can certainly sponsor while outside of Canada and can go live with the applicant back in their home country while they wait for the processing of the application to be completed.
I don't understand what you are asking when you say: "Will they return my application with only US address listed?"
I am dual US/Canadian Citizen (Sponsor), our son is dual US/Canadian Citizen, my spouse (PA) lives in US for 17 years without status and I just want to confirm that I am entering data correctly.
I am talking about "Generic Application Form For Canada" PERSONAL DETAILS section.
I put Principal Applicant's DOB, Place of Birth, Country, Citizenship - that is all clear, but the fun starts with Q10 (Current country of residence).
My approach is:
Country -
USA
Status -
Other
Other -
Entered Without Inspection
From
2000-06 To
Present
Also in CONTACT INFORMATION section I am typing our
current US mailing address (Q1 ) and check
Yes for Residential address (Q2 - same as mailing address).
So, my concern is that I put everywhere our US address, but Status is "Other (Entered Without Inspection)" and the only link to PA's home country is Place of Birth, Country, Citizenship.
Will they start processing application based on this situation or will ask for overseas Residential Address which we do not have?