Some of these are nice ideas, but they're largely impractical.
Writing up a full review on an incident, what happened, and how what conclusion was made? There's already been 60 reports, so that's quite a bit of typing.
We also do have stewards outside the series involved, if only one. You give us a list of willing people that are known to be trustworthy and have the free time and will to do this, (that don't even take part in the series) and I highly doubt we'll turn them away.
It's a lot of work, yes, but it's the way things will be smooth, in my opinion. That's why I am suggesting to bring more people from outside the series, neutral people, to help with incidents. But like you said, it isn't easy to find people with enough free time.