This four ship Rebel build can compete if you practice with it. It has beaten Fat Hans and the Deci/Echo builds before. It's one of my favorites. It's just so simple... give PS12 to whoever needs it; Wedge swarms PS 9 to someone else in good position. Or if you need that Ion Cannon Turret to fire off first to catch a Phantom, Roark can give Wedge PS12 and he swarms it right back to Roark.
Roark w/Ion Cannon Turret
Wedge w/Swarm Tactics
Blue Squadron Pilot w/FCS
Rookie Pilot
I'll also add that you shouldn't worry about being seen as "conforming". If you like to use turreted ships or phantoms, just go ahead with it.
Own it, baby. I love my Decimator, and I'm not afraid to shout it to the sky! Chi-Boi for the win!