There is plenty of room in the park especially if you consider that coasters don't HAVE to sit on a dedicated plot of land. They CAN, and frequently do in other parks, cross each other.
I would actually prefer that from a visual perspective. It's great to have a few coasters that wrap themselves in a bow to stay on the same acre of land but it would also be great to have a coaster or two that stretched it's legs and came through other areas of the park. One place that Carowinds COULD do something like that would be from Dino's Area over into Crossroads and back. Or, if you're looking to nix Nighthawk or Vortex (or both), go over into RRR area. No reason to build a wall around every coaster. Let's have more interaction with other rides not to mention people. Love how Busch Gardens in Tampa has a lot of it's coasters interact with the people via water splashes, bridges, tunnels, etc. etc.
Stuff like this is cool...

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