It would make a lot of sense. If, for example, the Malvori were using their innate Wampire ability to traverse the NN to points associated with Fear as a way to be more spooky and/or ghostly, then something followed them back, or took issue with them intruding on their territory and/or hunting grounds, or some such. It would make for a great moment where the players think they have the villain cornered, only for something bigger and scarier to pop up and gobble them up. You can actually play that several levels, like the proverbial fish getting eaten by a bigger fish, then a shark, then the kraken.