Allow allocating groups "Types" of objects for inclusion in atlases. Merge Material (UV) Export.
We are currently using CC3 to make a mobile spec character. We have come across a quality issue with the resolution of the hair texture when it's been packed to one UV using the "All" option in the Merge Material (UV) tab on export.
At the moment we have exported the hair item by type, therefore increased its resolution and packing it separately. But, this can be further improved if you give us the control of assigning custom object types and creating our own groups, so we can have more control over what object goes on which UV.
Add a "Type" or "Group" box in the accessory panel. So we can create custom Types and pack our UVs more efficiently with more control over how the objects are grouped.