Scyk Swarm:

Laetin A'shera — M3-A Interceptor 18 "Mangler" Cannon 4 Stealth Device 3 "Heavy Scyk" title 2

Serissu — M3-A Interceptor 20 Flechette Cannon 2 Stealth Device 3 "Heavy Scyk" title 2

Cartel Spacer — M3-A Interceptor 14 "Mangler" Cannon 4 Stealth Device 3 "Heavy Scyk" title 2

Cartel Spacer — M3-A Interceptor 14 Ion Cannon 3 Stealth Device 3 "Heavy Scyk" title 2

Or

Scyk Swarm:

Laetin A'shera — M3-A Interceptor 18 ion Cannon 3 Sheild upgrade 4 "Heavy Scyk" title 2

Serissu — M3-A Interceptor 20 Flechette Cannon 2 Sheild upgrade 4 "Heavy Scyk" title 2

Cartel Spacer — M3-A Interceptor 14 flechette Cannon 2 Sheild upgrade 4 "Heavy Scyk" title 2

Cartel Spacer — M3-A Interceptor 14 flechette Cannon 2 Sheild upgrade 4 "Heavy Scyk" title 2

What are your thoughts?

Between those 2, definitely list 1. Flechette cannon spam is a bad idea. They only stress unstressed ships so you can't bury them in tokens, and it only does 1 damage.

I want to try a more direct approach:

Serissu, cartel spacer w/ heavy mangler x4

With Serissu not having a cannon, his only threat is as a force multiplier. So the opponent has to decide if they want to kill the cannons, or the dude who's making the cannons harder to kill.