I think a zoo house is a really interesting concept that I haven't seen before, and that alone would rank this reasonably high on my anticipated list. Very similar to the solid concepts for a twisted Carnival Midway or an evil "Night of the Museum" house, I think the location gives a lot of liberty to make really fun, novel, interesting setpieces.
Unfortunately, I've been burned before. IMO Carnival Graveyard was mediocre at best, and Museum was actively bad. Mostly because they seemed to work around the theme, rather than with it. CG had far more Junkyard than it had Carnival, and Museum was a conceptual and visual mess all around. It seemed to want to avoid most of the obvious Museum Gallery motifs in favor of strange and contradicting niche concepts.
There seems to be a lot of passion from the creatives behind this one, which is nice to see - but I worry that this house will simply repeat history over again. Doing an "abandoned zoo" house, without any animals is ... a choice. I hope they've got interesting ideas to back it up.