I like the new library idea, however, I wish you could copy image to layer from reference library. Seems like a no-brainer. Not as anim brush, as it is now, that is just so unintuitive if you have big images etc.
Another thing is that when I use an image as a guide from the library the reference image is always on top. Even with opacity set lower, the pixels I draw blend underneath the reference image.
So maybe you could add a switch to the guide settings so that the layer you draw on is on top?
Right now I'm going back to my previous workflow: importing in reference images into layers. So hopefully you can fix this
Or am I missing some setting?