The first and second versions used 2 simple arrows to set up the dive direction plate position. It was for simplicity and usefulness. Driving a boat on the Great Lakes is not an easy feat and if you use an app at the same time, it must be quick and simple. Ten years later, everybody has got time to train and get better with drags swipes. the new version adds this move to set up the directional plate. BTW to not have it would make the app an old and odd design.