Since RT and most other processors are too slow for culling and initial browsing, I use FastRawViewer for this purpose. It can do simple labelling and exposure tweaks, but it seems RT does not respect these at all. Can I make it use them when it first sees a file? They are stored in a sidecar XMP file:
This is a little snippet of that which you can see exposure being dialled down by 2/3rds.
<libraw:Version>20004</libraw:Version>
<libraw:FRVS>BLE:1/0/0.75/-0.45;AE:0/1/1.00/2/6400;WB:0/0/0;CNTR:4/0;FBW:0;CM:1/0/0;XMP:0/1/2/1</libraw:FRVS>
<libraw:Contrast>9</libraw:Contrast>
<libraw:Exposure>-1.116667</libraw:Exposure>
<crs:ProcessVersion>6.700000</crs:ProcessVersion>
<crs:Exposure2012>-0.660000</crs:Exposure2012>
<crs:Contrast2012>0</crs:Contrast2012>
<crs:Whites2012>0</crs:Whites2012>
<crs:Blacks2012>0</crs:Blacks2012>
</rdf:Description>