It's been requested before, but don't hold your breath for it.
Not just the Rage, but the diameter of the spines on the new gen Intamins are noticeably smaller than what they should be (not to mention they don't have a single spine option). There aren't any two or three tube segment types for the old gen Intamins, no double spined track for the Vekoma looping coaster, no 4 tube segments for the Eurofighter, etc. Making the track meshes is a bunch of work, and so far, it seems like Frontier only makes extra normal segment meshes if the ride has a special pre-built segment that uses it (with the Vekoma swinging mine train being the only exception so far). It is highly unlikely that they will go back and add new track meshes to existing coasters. The best we can hope for is that when they go to make Planet Coaster 2, they do a little more research, and are able to spend resources making extra segment meshes.
Also, it'd look pretty odd for a B&M to go from a smaller box spine to a thicker one immediately. They should try to find a way to make the spine meshes to transition between the two sizes.
