Turrets reign supreme, and there is little you can do about them if you are not one of the select few ships sporting a "boost" action, allowing you to take Autothrusters.
Now, I don't think PWT-s or Turrets in general are bad in the game, but they definitely have a larger influence than it could be expected in a game about "outmaneuvering your opponents".
Some ships are mostly unviable because they can't take the only solution to turrets, because they lack the boost action. I was thinking about this when it came to my mind...