As for the warning markings, go for it. Some red outlining like you have around the lander wouldn't hurt. As far as I'm concerned only in PC Star Trek do combatants have the luxury of targeting specific systems like engines or weapons. In real combat you are just aiming for center-mass end of story. If an enemy can read the markings you have added so far, they are too close already.
These are the kinds of arguments that make it work.