Now that we have visibility within territory I thought it would be good to add a stealth mechanic. Something like a stealthed ship can only be detected by sensors with a % check derived from level of stealth vs. level of sensor. this could make sensors more important and viable as well provide a new avenue to explore without generating bad will ala open borders.
I was thinking the stealth module would be per ship until late game when you could build a stealthed fleet module. This way you can't stealth one ship and hide your whole fleet. Also you could play some trojan horse type scenarios with an uncloaked scout and 5 cloaked warships