Or any way of sentry attacking only if enemy subs are approaching MY space and not moving around in their space.

Yea, I have intelligence officer + close by neighbours... No queen yet.

My neighbor is scared of my build up, so he didn't complain, but I know he is pissed.
(I was happy btw, less enemy build up on my border lol).

nope, you just have to plan around it. that's part of the fun