I think the issue of pilot currency for non military displays is undoubtedly the one factor the CAA need to address most urgently.
It was a factor in the Gnat incident and will almost certainly be a factor in the Shoreham one.
There is a massive difference in standards between military and civilian display pilots in both currency requirements and experience on type needed to have DA/PDA. It would be no surprise if the currency standards for civilian pilots moves further towards that required for military pilots (in both terms of hours on type and ISP requirements).
Of course, that may kill civilian display flying, or kill the airshow scene (we will end up with Cosford/Farnborough and RIAT and sod all else due to increased costs)
BBC