2017 is going to be such an insanely weird year for the parks. Although I think Volcano Bay will be spectacular, there will be the idiots who are disappointed that it's "just" a water park. F&F, if a clone, will disappoint; and Fallon... well it's Fallon.
And then you have Avatar at DAK which will be purty but... it's Avatar.
SeaWorld will have opened Mako the year prior, presumably nothing there either.
Throw in the fact that Disneyland will be starting SWL construction, Season of the Force will be in its second year, DHS will be in midst on constructing TSL and you have D23 where it'll be announcement and details heaven... but we're all still not there yet.
I think it might just be the most headache-inducing year for sure, because we all will be getting new things that a large amount of people probably won't be satisified with for a myraid of different reasons. We'll all just be salivating over Nintendo for 2018, I guess. Maybe USH will deliver something.
Maybe.