I don't find Oicuun to be competitive, sure there are a lot of Gimmicky builds out there the would be fun to run in but as a competitive nature you aren't going to pull off as often as you'd like. 1 being that after you ram the only way to double ram again is to do a 2 straight or bank which unless is another large ship you should be blowing past their forces. Rocks and debris will make this even harder to consistently be in the game with actions (if you dauntless you gain 2 stress doing 2 damage making it 2 turns minimum before you can swing back around and do it again).

Against oicuun we will see more of a staggered formation, so one guy can take the heat and the rest can shred his 0 agility to kingdom come. Playing with the Decimators so far reveals that as soon as you are out gunned by more than a few dice you are going to loose given the fact you can't put damage out fast enough to make up for your 0 agi and point investment.