[chengdulittlea]

Hi Daub!

> A brush that can paint both behind and in front of previous strokes. Of course, this would need to be supported by a depth channel.

> Also a brush that increases/decreases neighboring regional contrasts.

I believe you can just use Blender Grease Pencil for that. You can paint with depth and sculpt the opacity/contrast to your desire. (Or honestly any vector drawing program? I believe adobe illustrator does this too)

> Almost all digital brushes are simply repeated stamps. This is now ancient technology. I would love to see a brush that can paint entire objects or the textured components of those objects. For example, with one stroke I would love to be able to paint a tree, or hair and fur. Of course, such a tool would likely be AI.

> An AI powered style randomizer.

You won't want that in this context. If that being an asset production tool or a diagram tool then maybe yes, but otherwise nope. This tool is intended to create images, and human (supposedly) perceive an image with spatial arrangement of shapes and gradients, and the way artists interpret and represent shapes and edges is mainly what natural painting process is all about. So the basic structure of an artwork in this sense is just a bunch of abstract shapes arranged in a certain order, not a statistic probability of pixel values.