this should also be in the Sculpting tab as well so you can do real dragon scales onto the mesh with geometry.Texturing Tab
5. Texture Stencil (Paint over a projected texture stencil on your model that can be scaled, moved, rotated}
then you would be able to bake out a normal map that is applied
to a lowerpoly model that was "quick retopoed" etc..
(or if you tweak it in the "Tweak tab" maybe it would even have good enough edge flow for animations)
then you can also use a bumpmap on that model as well for even extra detail.
having "both" types is nice, alpha brushes and the screen overlay,
overlay is alot faster and more accurate IMHO for large areas.
and just over all seems better as you can see directly what its going to look like before you even do it.
that style mixed with "sculpt layers" like mudbox would be pretty neat :P