One of the guys in our CC is running a Deci swarm with BTAvenger. It's been super strong in that format because it doesn't care about first player (because those rogues will all go after your ships have moved); it's basically running at full strength out of the gate (because the Decis are the equivalent of a large ship without any of the upgrading) it eats small-medium squad balls; it eats small ships flotillas and Liberties; it's great at objective hunting (Show of Force).
It's been made worse by no one on our side running a very heavy squad presence.
He's had mixed success running it in competitive games (needs some tweaks and different squad elements it seems) but it's a strong concept.