As you know, in the default configuration, Vue has 3 orthogonal views (top, side, front) and one camera view. In the Infinite versions (Vue6 already had it) you can convert one of the orthogonal views into a perspective view, meaning that you can have sort of of two camera views. In the perspective view you can use the normal camera tools.

This is very handy for me because I tend to define the camera position I want fairly early in the creation process and create the scene around that, without moving the camera again. This optimizes a lot what I need to do to fill in what's within the camera angle and nothing else. Using the perspective view allows to view the scene from different angles without moving the camera, which allows for very precise work. Of course, even without perspective view you could save cameras and switch between those but it's not as efficient.

See image for example (it's Vue6, but Vue7 is equal).