The new volume viewer is a great addition. Is it possible to load volumes other than the sharpened map from refinement jobs, such as the mask and unsharpened map? If not that would be a really nice feature to have. In an ideal world it would be useful to be able to open a mask as a transparent surface or mesh along with the maps.
Related to this, it would also be nice to have a dropdown menu for maps to select results from different iterations (e.g. to see at what step overfitting occured during a refinement).