Very sorry to hear this news, a real shame but to be expected really (unfortunately).
One would assume that Sub Terra won't be opening for 2017...I would hope Hex does as that is a genuinely decent all-round attraction, and very much "Alton Towers". I actually quite enjoyed CATCF when I rode a few years ago but can't really agree that the "lack of family attractions" argument quite stacks up considering there's CBeebies Land, Spinball, Mine Train, Rapids etc. that I would count as family rides, personally!