I can see simple fix to this issue. New “crafting station” / building piece -> LOOPHOLES - https://www.thevintagenews.com/2018/03/06/loophole-castle/
Actual Window Frames looks much just like this. So if devs would be able to add this new building piece tat would act like a crafting station - you put your thrall inside and thrall becomes part of it and can not be killed unless you put it out manually or destroy the crafting station. They could also create completely new “crafting station” with new design for T1, T2 and T3 buildings that would not be as strong as buildings but still would provide significant protection for archer thrall and lets say possibly increase their fire power or range or arrow speed… what ever… in short… Conan exiles Equivalent of turrets.
You can not really shoot from the bow while you on the move, but you can dodge arrows like nothing and kill thralls with your bow still easy enough… With 5 turrets like this you would have much harder time to do so and even offline raiding would be more “interesting”