I love the Credits feature!
This however needs to be able to pull data from the week / month and not just one individual stream. You should be able to show off all the awesome people who have been supporting the stream. I personally feel like 1 month would be the perfect length of time. This would then allow you to have a visual scrolling list of people who have helped the stream over the past month.
I would also like to see another section added to the credits called Chatters so that the people who are actively chatting are included in the credits roll also. That way when like say someone subscribed 2 - 8+ months ago but they are chatting in active streams are still included in the list.