You guys really need to spend a few hours on the Litchi site. Really.
To whet your apetite: Waypoints (WP) have a rich set of parameters you can set: Location (of course), altitude, heading, gimbal tilt angle, speed to next WP, and some others. You can have the aircraft stop at a WP for a defined period, take pictures, start/stop video, rotate, and some more things.
You can place POIs on the map and configure WPs to focus on them (i.e. point the camera at them). Litch will manage the gimbal and heading of the aircraft as you fly by, smoothly turning the aircraft to keep the POI centered.
Check out
this thread if you want to get an in-depth idea of some of what Litchi can do for you. It's not about Litchi, per se, but about pre-planning methods/tools. However, in the process of examining these issues there's a pretty complete run-through of a Litchi mission, with lots of visualization, and then the final result.
Bottom line is this: WP automation enables flying and cinematography that is impossible manually.