I mean to be fair, something anime is not what you'd expect to see at HHN, which seems to attract horror fans (who probably don't touch anime in the first place) the most. They probably threw it in in wake of FFN's success and to also potentially appeal to those coming for FNAF and probably otherwise don't attend HHN. (Side note, at least the CM merch will be easy pickings for discounts once HHN ends, meanwhile FNAF stuff has been getting eaten up and I heard the masks quickly sold out to where it seems they only had Chica left when I went to the park on Sunday)
I think it just comes down to if they will or won't shoot for coinciding media. JJK's probably not as mainstream considering the One Piece merch flew off the shelves and I still saw some JJK shirts in the discount store in CityWalk on Sunday. I also finally did some research and yeah, there didn't seem to be any major media releases for it this year outside of the ongoing manga. So that's one possible factor that they might not care if something isn't as popular as another.
It could really go either way. I do get the desire for your top picks too. But as of right now, it's hard to say whether DWT picks will fully come down to popularity.
In other words: I think another niche/not as popular anime getting the theater is just as likely as a relevant/mainstream one.