Took Instigator out for a spin yesterday.
It locked down some evil rebel bombers, but there were no Imp fighters nearby (mostly because my big-ass ISD overlapped them).
So, the Reb squadrons are engaged by the ghost squads, so can't move away.
Since ghost squadrons are not viable targets, they can shoot at Instigator (as per a mail from FFG).
That much was clear.
But can they shoot at other ships as well? Or just the Instigator?
There were two other ships in range that they could have shot at - another Raider and the ISD.
We went with "have to shoot Instigator", but we were not entirely sure.
What is your verdict?
I don't think the outcome would have been affected much if we got it wrong - the ISD would have lost some more hull and defense tokens before racing to safety and Instigator would have lived.