Playing Procyon Insurgency I've reached the mission where you have to remove subsystems from a Hatshesput.
Using the HTL model, I've run into some major problems.
The subsystem points are so far out from the hull that any missile trying to hit that subsystem explodes in front of it, doing nothing at all.
The engine subsystems aren't even pointing to the thrusters, instead they're placed on solid hull above it, which doesn't do any damage at all, despite the reticle being square indicating that it can hit for damage.
In short, the HTL Hatshesput has unhittiable subsystems unless you use dumbfires or primaries to hit where the subsystem actually is.