Hi Disciple
Great to see others having similar idea.
I looked into this earlier in the year although i had to put a pause on looking to develop it.
The idea was very similar although i was experimenting with making it as a mod:
The idea was that all ships had a signiture - the stealth part of it was based on colour, material of outer shell, size, head signiture, lights ect. similar to realistic stealth
THen additional properties would effect the distance of HUD visibility EG: base distance is 10km = X
Examples of modifiers to visibility
Mass size : X km * (1.05 * Mass KT)
Blocks : Xkm * ( Blocks / 1000)
Length : X km * (length in km)
Current power use: X km * (MW/1000)
Radar reach (you scan us we scan you): X km * (Radar reach /10)
Then system stats can decrease the scanning distance
THe problem i ran into is as a mod this would apply to players but not NPC's so you wouldnt see a npc but they could target you
Cons :
makes material choice viable
ship design advantage
Ship placement vs enviroment advantages
additional care when flying (use your eyes)
Hope this helps the idea