While I personally don't have the need to do Krampus again right now (maybe in 2026, as a 10 years later thing), I could see them opting for that easily as a budget option any time in the near future.
Other IPs I could see returning:
American Werewolf in London - Sure, but it was nothing great the first time. Animatronics is not the way to go for this type of maze (as we saw, big creatures in AQP was a huge FAIL), they'd do these with puppets like they did in the past and nothing has advanced there. Also, maybe it's just me, but has the cult following for this film kind of...waned? Meanwhile, stuff from that era like The Thing feels like that fanbase is stronger than ever. I saw so many Reddit threads about that movie this year, but nothing about AWIL.
US - With the backlot experience nixed from the Terror Tram, there's a hole for some Jordan Peele horror in the parks proper. This was one of the best mazes and while prior it was in the Tram Plaze, I could see it easily being relocated to Curious George.
The Walking Dead - I KNOW. I KNOW, I KNOW, but let's think about this for a second. Last time Walking Dead proper as a maze was 2015 -- which will be 10 years ago (holy crap I am old) next year. 2016-2021 was "The Attraction" and like you all, I easily see those as "don't count." And to think...they really are ramping up these TWD shows as of late with so many spin offs. Will AMC want to get back in the game? Leftover "The Attraction" stuff laying around might make it an easy return for Universal's pockets in what I AM ASSUMING was a lackluster year income-wise.
Mazes I'd like to return but who knows:
TCM Back In Business - I know, we're SICK of TCM. But we just got remake Leatherface back in costume form and if I can ride that momentum and use that to get this maze back, I'll take it.
Silent Hill - Yes, I'd like another Silent Hill maze but they should definitely start over from scratch. The old maze was very confined. And while we could say things like "yeah in a soundstage and blah blah blah." we alllllllll know they never actually WILL utilize that space. The most I can hope for is throw it on the Curious George lot so it doesn't fall victim to the same ol layout The Mummy venue gives us.
Freddy vs. Jason - Some people want Freddy back, some want Jason. Porque no los dos? This was one of the best mazes in 2016. I'd be down for another go.