Yes this would be a great idea.
Most podcasts and blogs are about the success. I would love to read a blog about startup lessons learned.
If this could eventually be categorized and synthesized to provide cautionary/actionable data, that could be invaluable to the community.
Something like: 40 out of 90 failed companies without a technical co-founder fail within 6months. Or 40% of entrepreneurs try 3 companies before attaining profitability.