I would love to bring my dog on more trails to do this.  There is a bad stigma about dogs on trails but honestly, I feel my dogs do less damage to the environment than most peoples kids.  I obey the rules.  He is ALWAYS leashed and I pick up after him and pack it out.  Nothing worse than dog poop on trails or bags of it.  Don't blame the dogs, blame the humans.  This (your post) is a wonderful post and a great idea and it should become a bigger thing.  Keep up the great ideas.