Something I thought might be kind of interesting... If we want to go for a horror theme, why not ramp up the paranoia a little bit? Maybe if a certain Pokemon gets a bit too close to the truth, townspeople or Stalkers could actively seek them out? For example, if Laura is hot on NTH's trail, she receives a personalized warning from them? Or perhaps even certain Emissaries could be blackmailed by Stalkers, through PMs?

Also I know we never did use the Assassinations, but maybe we can work on that a bit, too? Like, perhaps taking into account type advantages, evolutions, size, speed and the like.
For example, Laura goes to assassinate Senia. Senia fends Laura off by virtue of type advantage. But when Aurimas goes to Assassinate Senia, his superior size and weight, as well as his type advantage, allows him to prevail.
Also, maybe with each Assassination that is failed on a specific Stalker, that Stalker gets more prepared for future Assassinations, and more agitated, perhaps sending more of the threats?

Just some ideas, they'd probably need more work.