This talk should definitely been marketed harder to PM's looking to attend the event. I agree; it would have benefitted more from example.
Really interesting and relevant to everyone I spoke with.
Here is a link to the slides:
https://www.dropbox.com/s/gz1r7ohapr4orm4/The Debugging Checklist.pdf?m
I believe this was a last-minute addition to the schedule and Thomas did well regardless. The introductory slide of security tips and best practices felt a bit compressed and could be stretched out a bit (instead of a single slide/list). The security survey figures were interesting, as were the anecdotes.
Given the coverage of Composer, I think you should definitely add some examples of its best practices, such as keeping composer.lock in version control and using version limits (e.g. ~1.0) to avoid unpredictable updates to unstable or BC-breaking versions.
Great talk; but 30 minutes is not enough time to do the topic justice. Would love to see the talk distilled into several tutorial/blog posts.