"...mechanisms that speed up the actions of the individuals involved..."
You mean a kill switch?
I note the danger of enabling third parties to trigger impacts on Hive governance, and appreciate your concern. However, I cannot see how to indemnify witnesses from court orders without such a mechanism, because if they themselves act to impede the court's order, at least in US courts I reckon they could be liable for contempt.
Perhaps this is a risk witnesses just have to accept, since enabling external actors to affect Hive governance is indeed unacceptable.
That is my current position.
As @apshamilton stated here, the risk to any witness facing a potential court order seems to be fairly low, because of how slowly the courts operate.