Sensors (Again)

I can happily agree with an unchanging ship signature rating. I just loved the
idea of a ship reeling away, her smooth skin opened into jagged steel petals,
gas streaming from cracked bulkheads and tying it to the damage track seemed
such a simple way of doing it, one that I would cheerfully use on a less
granular rule set. Other suggested signature modifiers
  +1 Kra'Vak.     No particular reason, it just seemed to fit with

their more effective drives, maybe they run hotter.
  +2  (maybe more) Using active sensors

Would it be reasonable for a ship (or drone) that is going active to place a
marker beside it? This would show at a glance which ones were emitting and
should not cause too much difficulty during movement. Having three different
markers for the different ratings (basic, advanced, superior) seems
unnecessary but remains a possibility.

What I am now thinking about is remote sensor platforms, stolen cheerfully
from Star Cruiser with a little of Harpoons tethered SSN drones added in.