I guess it is not about the exact world which should be updated but about the pieces which are missing when using tekkit.
For example oil wells are not generated with Terrain Control so one need to create a BOB for it. It would help everyone if those things could be found here as tipps and examples.
No real server owner wants to copy a whole world. For me it is just about the pieces i need to generate with TC for example, as tey do not occuer otherwise.