Make the video panel scalable so that viewers can click and drag the size like they can chat. I know 1280 x x1050 gives a very small video if there is interactive and this would help the viewer get the best experince possible.
The linked image is my issue even with chat as small as it can go and controls on I might as well watch the stream on my phone. If I want to hide the controls for a better viewing range I have to scroll down the page to where I can't even see the action to get the hide controls button. I want to be able to resize the stream and have everything else adjust around it.