I think a cool feature would be a preset to be able to enable canine mode for a specific amount of time, maybe 3 settings which could be customized. That way the owner would be able set it and forget it without going to the extra trouble to return to his room and de-activate it.
I love reading about your products, by the way, and I hope they continue to gain in popularity. They seem ideal. I hope someday that my wife will be interested in investing enough of her time in training me and we would be able to get a DL 2000.