What if FFG would use an FAQ to change the rules so that PS 9 is the highest possible PS? It could be a relative easy fix you could introduce with an FAQ with no need to print new cards etc. (though you also would need to change 'Epsilon Ace' to go along with this rule).
So with this rule you could use VI on a PS7 pilot to get him to the top but putting VI on a PS9 pilot would have no effect (so you wouldn't put VI on a Vader or Soontir).
The main benefit I see in this is that we would have more options whenever the meta calls for 'highest ps possible'