Smart Material Parameter Attribute Holder
It would be nice for smart materials (and to a lesser extent smart masks) to be able to expose parameters from the sub-layers and place those in the top level folder for the smart material itself. This would allow the developer of the material to mark key parameters for adjustment and the users of the material to avoid diving through the layers to make simple adjustments.
I envision it working similar to how it does in Substance Designer. Just have a little expose button that would expose a parameter to a selected parent folder.
I love smart materials and they are saving my studio realms of time but right now they aren't as clean and streamlined as they should be. Allowing exposing of parameters would go a long way to help.
I would also suggest allowing for smart materials / masks to be stored in a more contained format (like the sbsar) but that's just a nitpick issue.