Just an update on what i ended up doing in regards to the "GWX is too hard" issue i talked about before.
I been playing & enjoying Vanilla, LSH3, and GWX in paralel, and i decided that the difficulty level that seems "right" to me, is that of vanilla, except for the aircraft. Aircraft in vanilla are a joke, nearly harmless.
Anyway, i decided that GWX would be my "main mod", and here is what i did to it:
1.- Modified sensors.cfg and sim.cfg so that all sensor parameters including visual, are those of vanilla. only excception is that i decided to keep the feature of GWX of perception depending on crew endurance (its off in vanilla).
2.- Modified GWXs ai_sensors.dat, ai_sensors_sb.dat and sensors.dat so that every detection device (sonar, hydro, etc) are the exact same of vanilla. For the sb file, i put reasonable values.
For visual, i made two versions, one for 8km GWX and one for 16km. For the 8km version i left the visual range to 8000m (as vanilla) in both files, and for the 16km version i left it at 16000m for both.
In vanilla both ai_sensors and sensors have the same value (8000). GWX has AI range at 30,000! no wonder they were "clarivoiant" hehe
Another feature i kept from GWX in regards to visual perception, is the minheight value, its 0 in vanilla, its 0.4 in GWX (iirc). This i think dictates if the enemy can see your periscope from 2000 meters or not. It makes sense that they dont, so i kept it.
3.- Completely replaced airstrike.cfg for that of vanilla. Im hoping this way aircraft will be harder than on vanilla, but not as hard as in GWX.
I played several hours of GWX with 16km ambience using my "vanilla sensors" mod, and so far i think the changes worked as expected.

So far it feels almost like vanilla, but with all the GWX goodies.
If anyone is interested in this small mod, i would be glad to upload it