[Nitram Draw]

The way I understand cloaking and sensing is the are 5 possible types of sensors, passive active gravatic psychic and temporal and 5 types of cloaking, same types but each cloaking level only stops level 1 of each type of sensor.
I like the idea of a cloaking device that only stops, for example active. Its abilities would prevent the maximum level of sensors of all types except 1, it is always a vulnerable to one type of sensor. You could have 5 levels of each cloak device and need to choose what type to put on your ship. Might be a pain but it makes sensor building and cloaking more challanging IMO.