I'm sure parks look into things like this before deciding what would be best for their park. A Wing Coaster seems to be much more of a draw for people rather than an invert. Yet another reason why I think that an Invert is less likely for SDC. I'm still thinking it will be either a Dive Machine, or a Wing Coaster.
Even though I really wish it would be an awesome, terrained, heavily themed, flying coaster! However it is RUMORED to NOT be a flying coaster.