Well, sov mortar was always terribad, pit got massive nerfs, ISG was brought in line, USF mortar lost quite a bit of range and PACK howi, well, no one even remembers it ever existed so yeah, only wm turbomortar is spreading the mortar cancer.
After bazzilion nerfs it got to every singular stat that isn't model count, its fine.
The OST mortar is broken af b/c of its ROF which practically means it can negate its reduction in accuracy. At least the USF one cant hit shit on auto fire, has limited range, and requires you to use the barrage ability to hit stuff. OST's you just set up and let it go to town.
The amount of wipes those things dish out are crazy
Maybe we give the crews a debuff or reduce their damage but keep the AOE. Its to just hard to move aginst a mortar especially vs OST. You get pummeled into an MG arc that half the time spots for itself and suppress in first volley while turbo mortar hammers down. You move to avoid the OST mortar and end up running into it anyway and lose half your squad or half of its health. Even the USF ROF mortar can be broken b/c of how many shells comes down, you can wipe entire team weapons before the pack up but at least you are limited in range and are ez to push away. Either way its incredibly frustrating to play against. Maybe give the shells a higher air time to reduce how they come down to hit behind a unit if its moving or something....they need something.
Thats my two cents.