the only reason I'm seeing is if he's riding a terrorgheist. That is the only reason I can think of taking him over a normal vampire lord.
With the vampire lord I can achieve the same regen save with the seed of rebirth and a mortis engine. In the 3000 point list I use I run two mortis engines flanking a horde of ghouls with my vamp lord with seed of rebirth, dragon helm, other trickster's shard, and giant blade. He can dish out the same damage as the king but he's way more protected.
I just want some ideas of how the strigoi ghoul king is more useful than just to have an extra terrorgheist.
With the vampire lord I can achieve the same regen save with the seed of rebirth and a mortis engine. In the 3000 point list I use I run two mortis engines flanking a horde of ghouls with my vamp lord with seed of rebirth, dragon helm, other trickster's shard, and giant blade. He can dish out the same damage as the king but he's way more protected.
I just want some ideas of how the strigoi ghoul king is more useful than just to have an extra terrorgheist.