Edit mode: Element

Location: Elements Material
Function name: Rename texture
Function icon: Same as existing "Edit label" function
Function action:
Renames texture in Elements Material and rename its label on each face of each element using it
**Also, I think there should be a "Remove All Unused Textures" feature as well, so you can easily delete any textures that are currently being unused. I've seen this in almost every CAD/3D program I've had; it'd be nice to see it in this one, too!

Edit mode: Element

Location: Elements Material
Function name: Remove unused textures
Function icon: X
Function action:
Removes all unused textures (= textures listed that are not linked in any element face)