This could have wider implications, but one thing I wish was broadcast was the design review of the finalists/winners. If this is supposed to be an engineering competition that encourages everyone to learn, then I'd place equal importance on the review compared to the actual cars running, even if less exciting. The review always goes over the pros and cons of the information shared by those students who presented the car and where they could improve and where they excel. I know making note of attending the review at every competition I've been to has made me re-consider how much I don't know of what I don't know. Just being aware that (for example) CoP migration can be a concern instills me with a with a will to seek how out large of a concern, what factors may aggravate this concern, and if there are larger fish to fry before becoming tripped up on details of my possible CoP migration.
The posts like that from GTS I highly value. Thank you!
There are a few videos on Youtube recorded by students, and Claude at several competitions gives some of the best feedback. Bill Riley also gives some depth to help. There's a reason these are done publicly at competitions, I just think it should be a little more public if possible!
Example:
https://www.youtube.com/watch?v=B6-sr8D6WPU