I imagine that a late game POI would be a bandit base, with smarter AI attacking you if you attack it (and a much longer respawn time). I imagine a POI where, once you alert one bandit, they ALL aggro (subject to spawn limits).
I also imagine "challenging the duke" -- you pay 50K dukes to a trader, and your next horde night is 5x as hard, but you get to skip the subsequent 5 horde nights. Each time you do it, cost increases 50K. Or you challenge a superbeast, like hogzilla, but a bear or direwolf. The key is that the player should be able to choose whether to initiate this endgame content.
Someday there will be a story involving Higashi, nukes, radiation, research ...
I also imagine "challenging the duke" -- you pay 50K dukes to a trader, and your next horde night is 5x as hard, but you get to skip the subsequent 5 horde nights. Each time you do it, cost increases 50K. Or you challenge a superbeast, like hogzilla, but a bear or direwolf. The key is that the player should be able to choose whether to initiate this endgame content.
Someday there will be a story involving Higashi, nukes, radiation, research ...