You raised an interesting point. However, you need solid experience to do that. The operational stress injury social support group, the OSISS, is made up of supportive peers who already do a great deal. We can't ask these people who were themselves injured to take on this responsibility over the long term, because it is extremely demanding.
As Mr. Gannon said previously during a meeting, the situation can change because of a triggering factor. It can trigger the same thing for the helper, who may have experienced the same situation.
I am not saying that it couldn't be done. If we trained and guided these people, they could perhaps become excellent case managers. We would have to do a lot of coaching and provide guidance to ensure that they did not suffer adverse effects while discharging their mandate. It's an interesting idea.