I haven't had a chance to fly this yet as I need to pick up a second copy of Most Wanted, but I think it will be fun to field and pretty **** effective against swarm lists. It may or may not struggle against certain 2-ship builds, but overall I think it's a solid, if gimmicky, build.
Kath Scarlet
-VI
-K4 Security Droid
-Seismic Charge
Binayre Pirate x4
-Dead Man's Switch
The basic goal of course is to try and force a scrum, ideally on the second round of shooting, with the pirates and the opponent's ships locked in a traffic jam. As the pirates go, they detonate both each other and the enemy. Meanwhile, Kath is K-turning and will fly as much of the game as possible away from the enemy, keeping them in her rear arc for the additional die. If all goes perfectly, all Kath will be doing is mopping up after the headhunters and shouldn't have to do much of the heavy lifting herself.