A B&M Hyper won't ever happen due to the restrictions. Unless they fancy digging a 200ft+ trench...
Or if the locals decide not to restrict the UK's largest theme park from building roller coasters. It is so strange that a park with so many world's first coasters, including 3 iconic B&M coasters, has such tight restrictions. It's hard to imagine how different the park would be without the restrictions and how it would affect the park's popularity. Of course this is me just dreaming of an almost impossible reality but parks can have a change in restrictions. Thorpe Park's height restriction almost doubled in height to allow for Stealth to be built.
Dreaming aside, I expect SW9 to be a thrilling coaster. We had a family SW with Th13teen, a thrill coaster with The Smiler, a family coaster with Wicker Man, and so hopefully a thrill coaster for SW9 to follow on the trend. Assuming no changes in height restrictions (which is almost certainty), I'd like to see a coaster focusing on either speed (with launches) or water (with splash downs).