Not sure that's gonna work well. The thing that's not really the point maybe. The issue is there's really a lack of users for docker-latest and I'm questioning its existence :).
Take F24 for instance, docker is at 1.10.3 while docker-latest is at 1.12.6. However, nobody really test/use it resulting in me spending time updating it where it sounds like nobody cares about it.
Your approach works for F25, both docker and docker-latest are at 1.12.x.
Maybe we should just wait for system containers and keep building it (on me).