A little to the image of the component that already exists for the camera, the Preview, in my opinion, and in view of the projects I've been through and that this option was requested, it would be useful to have as input parameters the size and positioning that it occupies. This places the camera open only in a predefined area of the screen.
Another feature would be, regardless of the size of the screen, be able to add buttons or logos for example, and these logos could or may not appear on the picture taken, as if it were a watermark.
Thank you very much for your attention,
Nuno Verdasca
Just an example: