Hi! Nice to meet you. I'm happy you like the game :)
The Breach is a very light-rules game BUT if you like to have more details about the Cloak, you can add sub-systems to it.
For example, in the manual I wrote about the Communication System or the Flashlight.
You can easily assign them dice, and ask the players to reduce them every time they use them or everytime the move from one zone to another. Also, you can decrease them as consequences of a Reaction Roll.
So, if they need to reduce a die but it's already at D4... well, they are running out of this system, and they cannot use it for the rest of the mission.