The whole area is an absolute mess. The bridge, (and the mess of paths in and around it), the back end of corkscrew (which leviathan won't entirely cover), the old chairlift area, and the castle, plus all the paths around it. I've included the monorail mid station in the area below, as by all accounts its days are numbered too.
I think the biggest issue is that the main thoroughfare is a choked narrow pathway in and around Mid station, while there is a broad, massive path alongside Storm that effectively leads to nowhere.
Sea World spent a lot of time developing the back of the park with amazing dolphin pools, redevelopment of the old water park and so on, And now the front end of the park is getting a little love, but this hole in the centre is in desperate need of redevelopment of some description.
Keep the castle if you can make it viable, but don' t keep it running as a poor man's Roxy. Get rid of the Viking's splash pool, and level out the ground between chairlift station and storm, fix the paths around Jet Rescue and the bridge - there's so much to do, but sadly with the Atlantis development, this mess of an area is probably going to have to wait a bit longer to get the love and attention it deserves.