I don’t think enemy decorators should be disabled.
Imho there should be a skill for all crewmen called “Eyesight” that makes such decorators invisible for you from a certain distance.
It should be upgradable via GE (amount scales with level by 100%) and provide at max level of all crew a spotting range of up to 50 m (might be too much, but it is still up to Gaijin to balance it). It can also increase the FoV of German mains, but that is probably too much as well.
This way devs get profit: you pay GE for extra camouflage, and you pay extra GE to negate extra camouflage of your enemies!
A splendid idea, and if it gets implemented, I want at least 51% of revenue produced by it.
Spoiler
Is it /s or /j? Who knows!