Something to counter the royal guard interceptors, hopefully.
The YT-1300 already exists, put a gunner or Luke on Chewie and make interceptors cry.
If you wanted to be a real d-bag about it you could also run a squad leader Jan Orz so that Chewie could attack for 5 dice at range one with TL/F and basically just oneshot an interceptor every turn.
You could seriously run Chewie + Gunner, Jan Orz SL + Ion, Rebel Op + Blaster Turret and come in at 99pts. All of your ships don't care about facing as they are all turret boats and if they decide to focus down the HWK-290's Chewie will just clean up house hard, where as if they focus on Chewie he is durable enough to survive a round or two and the HWK-290's help bring down anything Chewie doesn't one shot.
The strength of interceptors is mobility, if you completely remove the advantage of flanking and mobility by running a team with lots if not all 360 firing arcs you really shut down interceptors hard.


