Alright, all of your points about range, obstacles, and silhouette make perfect sense. In retrospect, I'm not even sure why I asked about range... that's what I get for trying to post while herding toddlers.
I don't intend to add to the already-considerable debate about the Ghost, Hera, and what the stats "should be." I'm still curious about your distinction about using an opposed roll only when there's a small piloting crew. To me, it seems very arbitrary. You might just as well say that you'll use standard gunnery rules against Minions and opposed rolls against Rivals and Nemeses.