Reviews all over the place. Some say one of the GOAT, on par with 21, etc. A few others say on par with 22 (well, only one review I've heard was THAT negative, but yeah).
My opinion: easily the best house set design in the years I've been coming (16, 18, 26, 27, 28)--especially the facades, which for seven of the houses range from very good to mind-blowing. As far as house intensity goes, it's tough to say because I am VERY VERY hard to scare, especially with the conga lines that have been a thing for at least 15 years now, though some of the houses do feel a little understaffed. Also, they clearly took a couple of risks that didn't quite work out (the "barrel" scare in Carnival that I never saw, the dropdown clown, the single light source in SoX) but I applaud Uni for being ****sy. Still, think the vast majority of the houses are really good.
The scare-zones: Vamp '85 is MEH. Traditions falls just short of TrT, but I love that there's no stage, as I always love having a set in that spot. Killer Klowns is too short, but has sort of an Asylum in Wonderland feel to it. I like the different displays in Chucky. Overall improvement from last year.
The event feels decidedly less corporate than it did the last two years.
Basically, 16's shows + 18's backstories, house intensity, and scare-zones + 28's house design = perfect event.