Multi-Replicate V1.07 allows you to duplicate layers and channels in advanced mode. It is properly compatible with the latest releases of GIMP 2.8 and yet backward compatible with the older ones as from GIMP 2.6.10.
Image/Edit – Layers Dialog – Channels Dialog
The script is equipped with several functions for making the repeated duplication of any drawable really effective and powerful, especially when it is a matter of layers. In this regard, you have a set of options aimed to consecutively transform the layer copies relative to one another trough incremental rotations and/or scalings, making it possible to obtain agreeable series of duplicates that range from the simplest to the most elaborated ones.
Other important features are the ability to put the layer copies in a new layer group and the option to arrange the duplicates in the stack either from bottom to top (so that they will progressively show up above each other) or from top to bottom (by displaying below each other).