What type of troop it will be is not decided, the kingdom already has 4 types, and we might as well decide on a completely different one.
There is a dwarf crawling around in Jarls icy realms, so there might as well be one in the much warmer Abyss
I’m only guessing here, but 4 horsemen of the apocalypse, I’d say Pestilence will have a disease all cast, Famine possibly reduction of all health by half to all, Death casting Deathmark on all opponents?
Please note that I haven’t even bothered looking at any hidden or encrypted files.
So possibly having a unique spell/final trait other than disease would be nice on a legendary.
I would like to see a Blighted Land troop. Maybe not a daemon but a divine troop like a Phoenix. If it burns to death its trait could resurrect her from the ashes with 100% chance.