Since i was sitting close to the officer window ;D
My observations are
"People who had lots of entry/exits specially non-English stamps,
If one is unemployed, they were asking lots of questions how you make living, proof if living in Canada, if stayed out of Canada for too long, And one obvious
if valid US work visas were there"
I believe i will get RQ since i was working in US till 2008(H1 expired in 2008) after that i moved to Canada and working full time since then but i don't have entry stamp in
my passport(2008), i saw the officer writing"unable to verify absence from Canada " but its not my fault if they don't stamp passports at border
After moving back to Canada i only went to buffalo for 1 day for shopping :-[ no other travel
I already ordered the OHIP record, since it takes 4 weeks in case they ask for this, i am also thinking to order border records and have everything handy....