I have recently done battle with a pair of imperial aces and in both cases I took Et'ahn with Corran and Cracken and relized something, Et'ahn after turtling is really useful. He makes an unappetizing pilot to attack when stronger, easier to hit ships are around, but at the same time makes it much easier to push crits through. Now maybe I got lucky, but in every game the crits from Et'ahn ended up more or less crippling the ace, making it much easier for my ships to drag them into their sights and finish them off. I think Et'ahn has real potential against both lightly shielded aces or swarm lists, since the trick to beating a swarm with aces is making sure the swarm never gets a full attack. For what it's worth the team was:

Et'ahn Abhat: PTL, Sensors, R2 Astro

Corran Horn: VI, FCS, R2-D2

Cracken: au naturale

P.S. I know this list isn't competetive but I have wanted to fly 2 E-Wings together for a while and figured why not. I was just impressed by how in every game Abhat did serious work.