The most useful feature is that it allows me as an admin, access all devices at one place without having any physical device with us! It's not so easy when we are working remotely or from different locations but this tool helps solving our problems very well by providing centralised system where I can see what my team mates have done using their own tools while they were away (offline). There isn't much dislike about ground administrative manager apart form its price which could be reduced further if more features would come along next version like offline mode etc.. If there was no such thing called "Ground Admin" then i wouldn’t use other companies products because everything comes under them now days :P So far nothing really bad happened only few minor issues here nthere solved easily just need some time getting used too :).