Tactical steps YC startups have taken to jump through any one of the de-risking steps: https://codingvc.com/how-to-de-risk-a-startup/ would be fantastic. Especially stories of creative jumps. You could do a poll of the YC network internally and have people share stories that then get mentioned per-problem or per-industry over time. A discussion underneath could allow others to share stories as well - beyond the YC network (that may allow you guys to spot interesting potential applicants and keep people engaged).

Generic advice is abundant and far less helpful. Individual founders could do episodes as well, but it's hard to be genuine and talk about the hard stuff when your startup's identity is affected - especially in front of customers and investors.

By focusing on a problem - the contributing founders can chose to get credit or stay anonymous with their answers. You could also do an episode on just cool "Tell us about a time when you've hacked a non-computer system." answers and it would be a great listen.