Make it easy to add a new layer
Submitted by Alexander Alzate
Having an "Add New Layer" or two "Add Layer Above/Below" options would improve the user experience making "Layer Managing" more compact, also having a keyboard shortcut for these will do so.
IMHO Drag-n-Drop is not the best option since I prefer using as less as possible the mice and mnemonic shortcuts (option with underscore) or any keyboard shortcut work pretty well.
There is already a discussion about in #930 (closed), but I think you are lacking this feature.