Option to merge animation layers

One of the animators for our project makes extensive use of layers in their workflow and some clips end up having 15+ layers. The layers work great but the clips can end up a little disorganized, and the umotion projects can end up getting pretty bloated - often ending up being several hundred MB. While these larger projects are open, the editor will often hang on 'waiting for user code in UMotionEditor.dll to finish executing'. I think it would be very helpful for organization and performance if we had an option to merge layers.