I am convinced having a good respectable trustworthy Canadian immigration lawyer on your case is an advantage. If it wasn't , that legal industry would not exist.I am not sure how they decide about Visa office as there many people in this forum whose parents are staying in Canada with supervisa but still their files have sent to visa office outside Canada. Also not sure if taking Canadian based lawyer is an advantage or not. Keep us posted with the updates. I will do same. Best of luck.
We can see the difference now between applying on your own and getting a lawyer. The application is handled by CPC Missisauga and the requests for biometrics and medical come much faster than for those who applied on their own.
I wish you the best of luck as well. It is only a matter of a difference of months anyway. I hired the lawyer because as a professional myself I believe in letting the experts deal with important issues. It's not like taking out the weeds in my garden. LOL!