Improve Layered Textures

[trevor.adams]

(Copied from original User Voice forum) 

"Key features/changes: 

1. Layer stack one on top of the other (bottom --> top direction).
2. Blend Modes like in Photoshop! 
3. Drag and drop layers to change order. 
4. Separate Alpha (mask) and Opacity channels. 
5. Ability to paint Alpha(mask) and Opacity using 3D Paint Tool directly on object in viewport.
6. Not exactly a feature but also important. More attention and care for design."

[Anonymous]

Being able to name the layers too...this update is long overdue and would be a great simple addition to maya.