I make this list:

ARC-170: · Thane Kyrell (26)
· M9-G8 (3)
Vectored Thrusters (2)
Weapons Engineer (3)
Alliance Overhaul (0)
T-70 X-Wing: · Nien Nunb (29)
Snap Shot (2)
· R3-A2 (2)
Integrated Astromech (0)
Primed Thrusters (1)
U-Wing: · Cassian Andor (27)
Adaptability (Increase) (0)
Collision Detector (0)
Tactician (2)
· Baze Malbus (3)
Pivot wing (0)
-- TOTAL ------- 100/100p. --

Have 2 stress ship and thane ti reroll enemy die.

Any suggestions?

Why Cassian? If you drop him down even just to Bodhi, you can upgrade Baze to Gunner (which is miles better - sorry Baze). Nien Numb should be clearing his stress anyway, so Cassian's ability is only marginally useful. Bodhi's ability also synergizes well with Thane's M9-G8 target locks.

Also, I'm not sure how effective Snap Shot Nien really is. It's a really fun idea, but his high pilot skill means the only way Snap Shot it happening is if your opponent makes a mistake. I'd rather drop vectored thrusters form Thane and upgrade Nien to Push The Limit and Pattern Analyzer.

Snap Shot on Nien is incredibly effective. It isn't always about getting off the Snap Shot, its about denying a section of the map to the opponent, unless they are willing to get stressed.

The idea is used Cassian and baze to stress 2 ship. Gunner costs

Thane with barrell give It extra action.

Nien stress with snapshot is really good

I do think the regular old Y wing stress hog is better in this list than Cassian for stressing two ships.

R3a2 is unique and nien has it.

I dont Remember if It have a different build

That makes sense. Forgot it was on Nien.