Hello , as we said before in last comment there is no promises if it will be added or not , since we're not making any decision prior to adding a function or suggestion , its upon to developement team.
Adding such function is based of development department decision , I've already forwarded the suggestion wether to add it or not we've no power here :)
Hello , The function always worked like that , Creeps won't come out from camp unless there is a hero within the range of camps if that make sense for you :)
Hello , Why does it matter for you to have either sentry/observer moving or wether not ? When the function itself is actually moving around items. ( understandable as very minor bug but still has nothing to do with function )