I agree the photographs are not required and almost look desperate in this situation. Documentary proof like work contract and PP stamps should suffice with a concise cover letter just to make sure the VO is still awake! If you are applying for a temporary visa that was refused on the grounds of travel history (just a wild guess this is what you may be dealing with,) then that is another matter. When the refusal grounds are travel history the most valuable type of travel is that done for pleasure. It shows that you have the finances to travel abroad which also shows your establishment in your home country and increased likelihood to return home from Canada. If all travel has been work related it does show previous reruns home, but doesn't help with establishing ties to home country as much as if it was for pleasure. Good luck.