You test the color accuracy of the profiles you make with scripts from this page:
ACR Camera Calibration and Validation
Or I like to use Imatest Studio which gives a graphical representation of the color error, as illustrated here:
Adobe Calibration Results Photo Gallery by Steve Sprengel at pbase.com
These measure hue error not luminance (brightness) error, and perhaps optimal hue doesn't lead to pleasing images.
You can try starting with a different default camera profile instead of Adobe Standard, maybe Camera Standard, and see if that results in a better profile.
You can compute the values for the RGB Hue/Sat sliders using one of the Rags-Gardner or Tindemans scripts, and then compute the profile with those slider values in effect.