MachJump:
Many of these restrictions if they had been in force at the time.would have done little, if anything to prevent the events of that day,
There is something of that same concept here, in that the Hunter accident at Shoreham has enabled people to dust off and propose many already held ideas for even more heavy handed regulation/cost, that would, most likely, have made not a scrap of difference to this accident. (The specific cause of which is still unknown.)
Regardless of whether the changes prevent civilian operation of bang seat equipped aircraft in the future, the investigation so far has surely prevented the situation where a seat is flown with life expired cartridges.