Changing from the third person to top-down view is the matter of adjusting the spring arm and the camera attached to the player pawn. Changing input is also a very basic feature - you can do it as in any other project.
Regarding anything randomly/procedurally generated that’s something you need to figure out and implement on your own. The template was designed to work with pre-made levels, but it doesn’t mean it can’t be changed into a procedurally-based one.