You could do nerd on webcam occasionally and talk about invite drama, sum up what your matches or scrims were like for the week etc.
but....
I think what people would like most, would be for you to have a short 1-5 minute clip of you playing while you explain why you did what you did and how you were able to do something, from a scrim or a match. You could throw in some webcam or something if you were really desperate. They could be informative, funny, whatever you so desire. People would love that shit.