Part of the question is around whether you are observing a problem resulting form camera settings or post processing settings. If you are shooting RAW, the post processing settings are important. And the "formula " used with a D200 might not be the same as the "formula" required with a D7000. Even the Neutral or Standard settings are different.
If you are using Picture Control settings, Nikon software (View and Capture) does the best job at replicating the JPEG and allowing adjustments to the Picture Control settings. Other products may accurately replicate the settings, or provide their own variations for better or worse.
Normally a magenta tint would be related to white balance. That could be related to camera settings if you use them, or post processing settings if you go that route. Just don't assume the post processing settings for one camera will automatically work the same when applied to images from the D7000.
The D7000 has an improved image processing engine (the Expeed 3) and improves both color rendition and dynamic range compared to the D200. That might not be important to your taste. DXO has further details if you are interested.