Well... Everyone know that Helman Ghorst right now is more like mem lord and mem faction in campains (both, single and multiplayer)
I want to suggest two little changes for that faction and lord.
Change +15 to charge for corpse carts into +50% missle resist for corpse cart/corpes cart mount/The Brothers Ghorst Corpse Cart
Helman Ghorst's mount (The Brothers Ghorst Corpse Cart) - give it unik damage and healing aura. It will allow stack damage/heal from The Brothers Ghorst Corpse Cart and Mortis engine.