By "use the BaseLine exposure correction" - what do you mean?
BaselineExposure is a DNG specific TIFF tag indicating, that an "exposure adjustment" should be carried out by the raw converter. This tag is inserted in the DNG file by the Adobe DNG converter with the value of +0.5 EV for the Nikon D3 and D300, -0.5 EV for the D200, and D2X, -0.75 EV for the D70 and D100. The same "correction" values are applied by ACR automatically.
The automatic adjustment has legitimate usages. For example the Highlight Tone Protection feature of newer Canon cameras "requires" +1 EV adjustment in raw processing (and pulling back the highlights), because HTP is supposed to underexpose the shot in order to prevent clipping.
The problems with these adjustments are:
1. they are not always "legitimate". The argumentIn order to have common controls such as Exposure compensation behave the same way across the different cameras, Camera Raw applies a baseline exposure compensation that varies from model to model in order to get them all to behave similarly when the exposure compensation control is set to its default value of zero
is plain bullshit. What we see here is a "correction" of the camera's ISO values. Some camera's gains are not corresponding to ISO 100, 200, etc. but to ISO 80 or ISO 135 or whatever. Camera manufacturers don't like to admit this, and call the settings "ISO 100" etc.
It is not the task of the raw processor to "correct" the camera's characteristics.
2. the adjustment can be destructive: if the raw data "encroaches" into the top 0.5 EV (with a Nikon D3 or D300), the adjustment causes clipping in the conversion. On the other hand, a negative adjustment can ruin the shadows.
In both cases the adjustment is without any reason. The numerical range of the pixel values for a camera (and in some cases for the actual ISO) is given, and the camera can occupy that full numerical range, depending on the exposure. There is no basis to remoive part of those values.
3. The worse on this habit of mutilation is, that ACR does not give any indication of the automatic adjustment: the "Exposure" slider is at 0, even though an adjustment occured. Therefor all those users, who don't know about the mutilation are led to believe, that their shot is over- or underexposed, even if the shot is perfect.