I just finished doing a blocking / pre-vis animation for a 40 minute TV show using puppets. As part of that, we wanted to be able to check all the camera angles. Switching cameras in blender is a pain, so I wrote an add-on which makes things a lot simpler and faster.
Nice! Your addon work similar like Camera Selector Addon, but you add group. It will be cool to see extra options: Create camera by view and add prefix for all selections camera. Thx!