Needs more cowbell. Not really, but are the lights going to be turned on, all of the windows are dark. As for your custom tech, I have a suggestion. We already have targetable plasma streams that explode when fired upon, and this ships' ram scoops (or bussard collectors) are pretty prominent. How about a tech that "absorbs" (really just a timer) explosive/flamable material and then, after a certain percentage is filled, you can release said material (like the plasma stream) and enemies may fire on it, causing damaging explosions. The timer could go increase faster based on the type of nebula you are in (I'm assuming that you can read whether you are in a nebula or not and whether or not it damages the ship.)