I would suggest that if you're looking at a standard, it has to be more than an obedience- or task-oriented, directed standard. It's not “walk your dog down the street and turn around, turn left, turn right”. We've learned through doing the research—which backs up our own notion—that we have to take veterans and companion dogs through the different environments they function in, and in each one, ask whether the team is working together to make both of them safe, present and functional.
There have to be specific service dog tasking and mental health observations that say,“Yes, this is a service dog. It's not a comfort dog. It's not a companion dog. It's not a pet.”