gasto wrote:
What is the basic usage of Layer groups, to this date?
All that one can do is easily apply combined layer modes within a click. However, what would be expected(apply plug-in to all layers of a group) is not implemented.
Are there any plans to implement such feature?
You can't use masks on a layer group but you can apply modes, plugins, scripts, etc., to your layer group or individually to any member of the group. When you make a change to the layer group the results are applied as a collective property. When you split up the group you change the groups collective properties and each member starts a solo career.
That should be expected.

You can also link layers within a group to apply properties selectively.
