I really think they are near perfect the way they are. Yeah a thruster would be nice, because they should be faster then a bs, but everything else is good. A bs should be able to kill them and they can, but if you mess up fighting one you should be able to lose.
SGTMatt
A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship.