There is some magic in SJ:
Against imps shine as agility without focus is asking for trouble.
Works for every attack meaning good vs. swarms, Gunner/Corran+FCS...
If you k-turn thats one less hit for me.
It forces your opponent to think a bit more and hopefully make some mistakes.
This is my take on rebels&SJ:
Etahn A'baht — E-Wing 32
Predator 3
Sensor Jammer 4
Luke Skywalker — X-Wing 28
Predator 3
Dagger Squadron Pilot — B-Wing 24
Sensor Jammer 4
Intelligence Agent 1
B-Wing/E2 1
It's been working nicely so far as there is no clear target and all are capable of surviving concentrated fire,specially at R3. IA helps Etahn & B-wing BR and keep Soontir+Phantom inside firing arcs and/or block high priority/PS targets. Predator keeps damage output consistent and with Etanh crits + SJ around I'm killing TIEs faster than before.
Have you used SJ? Did it work for you?
Do you have a build where SJ is key to victory?