Vray and Arnold Shader: This would facilitate the workflow a lot.

Because the export of the textures and replace in Arnold or VRay needs a lot of adjustments in the shader itself.

That would allow for instance to create advanced substance materials, with effects driven in real time by painting on a layer (that is set as an image input in the substance).

Need more shader options in Substance Painter including:

Phong, Cook Torrance, Beckman, Blinn, Flat, BRDF, Layered

For example simple holding shift to blur texture

Similar to photoshop where you can paint straight lines by holding Shift

The location: Users***\Documents\Substance Painter\shelf\presets\materials

is no good for me.

I do everything from the D: drive other than run the OS.

Please allow us to change the Users***\Documents\Substance Painter\shelf\presets\materials location to one of our choosing?

There is no room on that drive for that.

It`ll be nice to have a tool to add gradient (ex: black to white from bottom to top of the model), ideally linear and radial ones.

When painting opacity mask, it would be useful to see the transparency in the viewport.
Must have to paint hair, torn cloth, etc

Image based lighting is great, but it lacks a main directional light casting high quality shadows. It would help a lot in model showcasing.

Simialr to photoshop's X shortcut. This would provide a fast way to swap black and white while painting masks.

basically the selection and transform capabilities of photoshop - select an area, cut or copy, paste into same or different layer, use transform gizmo to adjust in either 2d or 3d, release selection.

working with many layers to achieve this is unwieldy.

A Feautre like Lazymouse would be helpful, with it it would be nice to see more brush options like straight lines, dotted lines etc.

I like the way, Substance Designer lets you setup your library by defining paths in the preferences and filtering them.

In Painter, I always have to add the alphas manually per project...

For security reasons, it's not good to always display your email address, when making videos or taking snapshots, it's clearly shown in the Substance Painter titlebar, this defeats many common security measures, and is a bad idea.

More control for brush movement. The most desired feature is brush, that keeps stroke direction and rotates the alfa accordingly. For example - welding. In zbrush it is easy to set step for alfa and get desired result, also alfa follows the stroke accorgingly.

Currently it seems the wireframe can only be viewed in Geometry Decal mode. It would be very useful for hand-painting textures to be able to have it active in Paint Mode as well, so that the underlying geometry is easier to follow.

Currently the import of a map will populate many shelves including: decals, materials, alphas, stencils, textures and environment maps. It seems very messy to have this be the default action especially since it seems difficult to remove an image? I would like to see explicit imports of images to specific shelves. Also a remove map function would keep things cleaner.

note: MARI has a nice feature where images can be dragged in from viewers including web browsers right into the image manager. Very intuitive.