there are some mishaps where I definitely get more from reading the final message than reading the final outbrief. Having been a part of two SIB outbriefs to COMACC, the SIB has to decide what from their report is absolutely necessary for the convening authority to know or understand, and some details, which may actually be quite useful to someone else, are left out of the brief. The briefing is great when it's time to brief it to everyone in the SQ, but any FSO worth their salt better understand they need to read the final message and be able to speak to the details.
I've even called the pilot member or IO to clarify things prior to briefing the SQ if it's a SIB I wasn't a part of. I agree that photos and videos speak a thousand words...and it's also important to periodically revisit a mishap, so that the lessons learned continue to stay learned. Arbitrary requirements to not save a briefing to a drive, and delete it after a set period of time are ridiculous. The AFI guidance is to "delete when no longer required for mishap prevention purposes" but of course people will hoard things they're giving such limited access to, b/c they will ALWAYS be needed for mishap prevention purposes! I don't download and save final messages because I can readily access that information in AFSAS. If I could readily access the outbrief (Part 1A/B/C) and any re-creation as well, we wouldn't have these problems.
Bringing a solution to the table: when the final message is released and after the AFSEC QC process is complete, Part 1 of te Tabs (where the outbrief is) should be automatically unlocked. If AFSEC or the Convening Authority is concerned about folks downloading things and saving them locally (even with password protection), then make it readily available so that folks don't feel the need to download and save a local copy.