I don't like having to micromanage the creation of Haunted Lands either. I agree it could be cool that you can construct seeds which spread HL.
Did you see this? From a page or few back:
Passive HL generation:
It's still unit based, which I think a strong "plus." But the association between the units and the HL tiles might now be too obscure.
Based on # of Ghostwalkers, Haunts, and Redactors you have. A Haunt counts as 2 Ghostwalkers, a Redactor as 4. The Black Lady doubles the total.
Total * .15% chance for Forest, Jungle, Ancient Forest to transform into HL.
Total * .1% for Plains, Grassland, Floodplain, Wetland.
Total * .05% for Desert.
The checks are independent: A Floodplain will get the .1% and the .05% check, for example.
HL tiles will only appear within your borders. And only if you're Scions.
I very much expect future adjustments to the figures. (If not the whole system.)
Ghostwalkers and Redactors retain their ability to "plant" HL where you wish, thought the GW's time has moved from 4 to 6 turns.
Creepers:
Arawn's Dust works on Camps, too, and has no chance of failure.
Fed Creepers won't cause war if they "take root" in a rival's territory.
Resistance Roll on Burrowing Thorns moved from +10 to -10.
Rooted Creeper's stats generally boosted.
Reduced population/Reborn from captured/razed cities:
Population of captured cities reduced slightly. (About 13%.)
Reborn gained from razed cities reduced by 1. (It's cumulative with the above change.)[/quote]