Quality

The texture and texture settings should be saved with the brush variant instead of having to create a separate brush look. Photoshop, Paintstorm Studio, etc all save the texture with the brush instead of having this extra step.

I find it very helpful if you can turn the reference image into grayscale. This can free up the artist in color choices. This can also help with getting the correct values in the image.

Many artists will use a gird on their reference as well as on the canvas making it easier to get the right proportions in quickly without cloning.

When sketching ideas/concepts, it would be It would be helpful to have improved handling of typography in Painter. Here are some examples: Independently adjust spacing between individual characters. Use different sizes in one block of text, for in...

I'd like to be able to reset paper settings like angle/scale/brightness and contrast in one easy step.

When I collapse one or more layers with certain merge modes (such as softlight), I sometimes end up with a different result. I'd like to see it fixed so that what I see before collapsing layers is exactly what I get after collapsing layer.

I'd like to see a color swatch that previews the color I'm about to select. I'd also like an option to see the numerical HSV / RGB value.

The panels would show which brush is selected. Also, when I add commands that can be turned on and off such as 'pause diffusion', the buttons would update their status.

Sub-groups will be maintained when saving or importing PSD files in Painter

Resizing a brush can be very slow especially with certain brushes and certain sizes. Would be great if all brushes can be resized faster.