I am the Product owner for our Web Experimentation tool. Our current reporting is very robust but it will also be ideal to add visitor segmentation for new/returning visitors. I have a feeling we had this before but no longer able to segment by that. We are always trying to figure out if new/returning users convert different with our variations. Is this only available via audiences? It will be nice to have them on the filters section of the tool when you are looking at the results report.