I believe tournament broadcasting could be largely improved with a separate pop-up video source.

For Example:
-CS:GO Major stream, with a caster cam that can be moved around the video screen and placed where fit by the viewer, with the ability to make it larger or smaller.
-This could also benefit streamers with face-cam.
-Fan cams could be an optional features.

I think this would be a great exclusive not seen anywhere else, and would promote increased E-Sport production quality.