Looks like they're heading towards enforcing some sort of speed limit for yellow flags, instead of leaving it to the drivers to slow down.
That seems pretty sensible to me, it's in the nature of a racing driver to push the limits of whatever leeway he's given (although difficult to say whether it would have saved Bianchi, they're not saying anything about the crash).
Hoping Bianchi pulls through to make as full a recovery as possible, but each day it's more and more worrying