First....a big thank you to everyone who posted comments...including the most recent comment by Scott Lum. He is a marketing manager for online communications at Microsoft and is also one of the people I started interfacing with to communicate your feedback to the webcast team. The feedback you are providing is being pushed to the webcast team and they are receptive.
Next....Scott let me know of a couple of blogs you might be interested in for providing feedback on webcasts --
Technet Webcast Blog - Currently Dormant....BUT! If we drive enough traffic over there we can fix that!
MSDN Webcast Blog - Much more active!
Let's check out these blogs, provide some feedback and see if we can make some change happen!