[jivemi]

OK, so you're talking about opfire during your opponent's turn, right? Sorry if I misunderstood the OP.

Marmonger's suggestion has merit, although I'm not sure it would make all that much practical difference. As Imp notes from his own experience and observation, there already seems to be some consideration for hit probability and danger assessment.

Besides, if you believe the reaction fire is excessive, then why not simply hit the y-key and adjust the firing range of your units so they don't fire beyond a certain distance? That should ameliorate at least some of your objection to what you consider over-aggressive opfire.

Cheers and have fun.