I used to think the same since we were on a downward spiral for a while, but all the mazes were designed phenomenally last year. I think what helped is one maze had a minimalist approach (The Exorcist) so that helped with budget being spread into the other mazes. Maybe some years, the design just gets lazy while some years with more inspired properties, they excel. I can't think of any blank wall scenes or annoying empty rooms -- again, aside from Exorcist which used that concept wisely. And AHS had that one random room in Hotel, but I think they just realized they had extra space last minute or something, if I remember correctly from Murdy's twitter when asked about it. But TCM, Halloween, FVJ, TWD, and Krampus were overflowing with props and scenic, it was pretty astounding. Even Terror Tram had triple more stuff on it than usual.