Oh man, Johnny and Eren, they're definitely going to do something about the Dullahan, and herding them out of Unseelie territory. Johnny's in the FUCK YOU SEELIE court even more intensely after the whole Mair shit goes down, and he's going to be out for blood.

Well, figuratively speaking. They can pretty much shove the Dullahan towards Seelie territory, then we can figure out if they'd cross the line and attack the citadel itself?