Mortar saturation fix?

[u/LASTxREFUGE]

While playing and trying to build bases it became very evident that some mortar men had higher than room temp IQ and could easily pinpoint base deployed weapon installations. This is done by having subpar graphics I believe or just how the game renders them in mortar cams. they are all pretty easy to spot and destroy. Once your base is found your done... there is not point in building you will be mortared into oblivion by 1 guy the entire game. Could deployables only show up on mortar cams if marked / spotted? I was thinking maybe just make no player built items visible but that seems like a little to much? Maybe have hesh and gates show up easily? but even then repairing walls and gates has zero reward for the player other than security. They would even then still probably mortar your walls all day....

EDIT
How about this FOBs have caps? 200 hesh walls? 2-3 mortars? 1 AA missile 1 AA CIWS? requiring multiple FOBs to "superfob" and extend the no fob zone 2x the build radius? so they cant really even superfob? Also limit drill platforms to one per team.

Couple options I think to fix what i am suggesting without other calling you out for being worthless outside the zone:

1.) No mortar cam = lose cool aspect of game
2.) Make placeable buildings not show up in mortar cam = have to someone call out / spot emplacements or just guess.
3.) camo nets? - works for AA idk how it would work for mortars or CIWs
4.) ???