Well I wouldn't be shocked if we get another themed ride like Cobra...Basically all of the coasters at Busch fit snugly into the existing terrain...Granted, it was created for the ride, but it still works...Kumba is a great example of a coaster that weaves in and out of trees and ditches well...Montu is another good one...Then you have ShieKra that is impressive to look at from a skyline perspective..That's good to hear. An attraction doesn't need to have Universal or Disney levels of scenery to at least fit in its area and have a sense of place. Montu is a good example of a coaster that has minimal actual theming, but still has a sense of placement which adds to the experience.
However, I personally wouldn't expect any Cobra's Curse level queues or story on the park's coming attractions. Unless they were to incorporate the queue directly into an existing exhibit (ie Myombe reserve), my money is on the Mako queue being the new standard. A few theme elements here and there in the queue and station, but nothing to Manta or Cobra's Curse levels.
I would expect the next move to be a water ride replacement for Tidal Wave though tbh