NGE
Dont worry, IELTS would make things faster, there has been no such proof for this assumption. as one of the members said that travel records, more family members and dependents makes the process slower. your score is fine, 10 out of 16 looks fair enough.
idas
They ask for PoF again just to make sure as one of the members said, to check if the money showed by you earlier was real and still staying at the same place. They do it coz a handful of people borrow $ from from others during making PoF and later return that $ to the lender. Only your wife and kids are your dependents. Canadian immigration considers dependents in cases like if you got your old mum or dad or may be an adopted child who has only you in this world.
idas please share your IELTS score in each sections, your NOC, your Education (Major in Bachelors and Masters, if you have traveled abroad before