Navisworks and 3D PDF are actually very easy to navigate - we've had sales people, executives, and engineers driving during presentations and fabricators in the shop and field. Even if that is a problem, they have things like saved views which can be called up. In the case of Navisworks there is also the ability to "play" animation backwards as well as forwards, jump to a specific time, and so on. It doesn't play in real-time as well as an animation but when stopped you can look around and go "off script", not just what's dictated in the animation. Not to mention the ability to hide or make objects transparent/different color, search by criteria, oh and Timeliner features, and ...
Putting animation in a drawing adds clutter without adding technical clarity, which is the point of a drawing. Animation has its place, usually in the marketing field where it's more important to present/look pretty than answer detailed questions.