No Famous Battles
I didn’t care about the battle markers and never liked the ability to raise even the most powerful elites fairly easily with the raise dead mechanic. Hence this mod.
I reduced the maximum allowed "famous battles" to 0, essentially removing this feature from the game.
It also means that vampires/vampirates can never use the raise dead mechanic to raise anything more than the most basic units. This is a massive nerf, though I have no idea how much this affects AI factions. If your campaign lacks that distinct smell of undeath late in the game, this mod may be to blame.