It looks like the City of Roswell is doing the right thing and going to the Fulton County School Board to request an easement for a multi-use path along Hog Waller Creek. The request went before the school board tonight and I'm not sure of the outcome yet (will update). The path would be 10 feet wide. Here's an image of where the path would run.
If this is approved, the next step would be to connect it down to Norcross St. That would be a great step toward connectivity and toward making some safe routes to school for kids to walk and bike.