Roark +ion + recon

Corran +swarm + flexhett+r7t1+ munitions failsafe

Briggs+r2d2

The ideal being to sue Roark to boost Corran tops 12 then use swarm to boost Briggs Both get early shots the Corrans double tap to finnish a ship off

It's pretty light on the damage and none of those builds is particularly survivable. The problem with r2d2 biggs is that he can often die before you even use the droid. I think heavy Corran lists need Biggs or a hwk or an ICT, but rarely two of those things.

I think Corran flies best with a Falcon, either Han Shoots first or Fat of some variety. The biggest issue is that you are at best getting 6 attack dice at a target and nobody dies at your 12 step. And they get to return fire. I think Roark's biggest bang for his buck is supporting B wings or Chewie.

Trying to keep an X wing and an Ewing together just means the Ewing is not arc dodging. Adding a Hwk-290 just makes you less manuverable.

I'd almost want to try something crazy like Corran with a mix of chardaan refits and head hunters to just play bumper cars with and try to get things tied up and easily shot by the flashy Ewing. Think the Red baron and his flying circus.

15 health total indicated in your original list seems a little light too. Not sure what your meta is trending towards.