Delays in family reunification damage almost everybody. They damage the person in Canada who is wanting to be reunited with her family member. They damage the person abroad who is waiting to be reunited, possibly with children. It is damaging economically, because you have an economic unit that is splintered. It is damaging psychologically, because the longer it takes for children to get to Canada, the longer it will take for them to adapt to the Canadian public school system, which—I think as Ms. Marshall rightly pointed out—is a wonderful tool of integration.
Delays in family reunification do damage not just to the individuals. Ultimately they do damage to Canada by depriving Canadians at large of the maximum benefits that immigration can bring. So for all of those reasons, including the ones that you have highlighted, delays are a real problem.
It's noteworthy that, by adding the conditional sponsorship, we have added yet more layers and sources of delay in family reunification. We haven't eliminated overseas screening, we've just added another layer, and that just slows things down more.