I've been kicking around the idea of trying to generate an undead apocalypse type world in DF, but I'm not quite sure what the best way to go about that would be. There are a few ways I've thought about going about doing this, but having never attempted this before I could use some assistance.
First off, I'd like any embark to have a large proportion of undead on it, if not entirely undead. However, I don't want to have to deal with zombies standing back up every 15 seconds, and the possibility of other annoying evil region clouds and rains are kind of offputting.
It's possible to create custom regional interactions to reanimate, correct? Would it be possible to copy the example from the interaction examples directory and change the reanimation from weekly to monthly? If I do that, I need to fiddle with the advanced worldgen parameters to get rid of the built in reanimation interaction, correct? Do I just reduce the number to 0?
The other way I've considered doing this is through the creature variation system used for animal people and giant creatures. You can add and remove tags this way, but would it be possible to replace tissues this way? To say create ghost variations for creatures? None of the existing creature variations do that to my knowledge, but would it just be a matter of adding the appropriate tags? Is that possible?
I also don't want caravans, but that's a different problem altogether. I think it would be simple enough to add an undead civilization to get ambushes and sieges from, but preventing your own civ from showing up is another problem altogether. Perhaps I should just embark on an island, does that prevent the home civ caravan from arriving?
Thanks for any help.