It would be great to have the option to load image (udim) sequence into Substance Designer and be able to export a bitmap sequence from one Output node.

For those who sometimes like to use Substance Designer as an image editor rather than just a material maker.

I would happily give up on nuke or other compositing programs If I could apply all the fantastic functions in Substance Designer onto my texture image sequence at once.

In addition to choosing a Pattern in Shape Splatter, it would be amazing if you could choose a substance graph to Splatter.
Exposed parameters on the substance graph could generate a Map pin on the splatter node, and 3 sliders: Amount, Random and Map multiplier.

This would be an incredible way to get far more randomness out of splatter

so we could test non square textures on default cube object without necessity to load custom geometry every time

When a node has many parameters you always end up spending a lot of time searching for the ones you need. Groups help, but you still have to read their names again and again

Photoshop has a similar issue when you have a lot of layers. Their use of custom layer background colors makes it so much easier to find stuff at a glance.

Every time Designer is opened, the shader definition (for the physically-shaders) is set back to "Parallax Occlusion." To display height map displacement in the 3D-View, the definition has to be changed to "Tessellation" manually every time and change the height scale from default 0, which is very annoying and time consuming because of all the nested menues. As for most substances you work on the height map for a very long time, there should be an option to not only choose which shader to start with, but also which shader definition (and ideally which heigh scale).

Backface Cull Switch in Substance Designer. Without having to go in and manually modify the glsfx/glsl files, can you please add a switch in designer to enable/disable backface culling? This is especially needed for alpha planes.

It would be useful for scene organisation and readability if node connection lines could be assigned different colours. In complex graphs the number of connection lines can be considerable, and as it's now impossible to click on an output and highlight its path to the end (if dot nodes have been used) this can make following a line to its conclusion quite time consuming.

Running both Designer and Painter on a 4K 27" display isn't a great experience. The UI scaling choices are either 100%, which is super tiny, or 200%, which is too big. Could support for arbitrary scaling be added please? Ideally Designer/Painter/Alchemist would match whatever scaling Windows is set to. Photoshop does this, and it works really nicely.

A simple node where you select the input image from a dropdown (like in the sampler nodes) and get the size as a float2 vector. A toggle to get the size as log2 would be nice, too.

Only $size of the current node is available in Get Float2.

and connectable node inputs so it could take colors from some node graph .

Would be nice to use gradient map instead of gazillion of separate sliders with exposing it to other graphs

When working with a complex graph, with many parameters exposed, it would be helpful to be able to track the corresponding node of each parameter by highlighting it when the parameter is selected from the list (clicking on te drop down button of the parameter). It would make it easier to go back and alter the corresponding function if it doesn't work as desired

Navigation is different in Substance Painter to Substance Designer. Can I suggest you make them the same, as I find it extremely frustrating when switching between the programmes?

I use a tablet and a 3D SpaceMouse, so I have no middle mouse button. Ultimately I'd like you to support 3DConnexion's Spacemouse.

Would be nice if SD courd read cryptomatte exrs and produce accurate masks from it.

Current colorID way is so outdated .

Add Support for export using multiple GPU at once in substance designer.

So far substance designer does not benefit from Multiple GPUs. this is extremely important for any work that require to batch bake and batch export a lot of textures, complex textures, UDIMs and so on.

Since Designer is extremely GPU expensive in the export phase it might be helpfull to have this feature, both in designer and in the automation toolkit

Designer could greatly benefit from allowing numerical parameter fields to be subject to simple math manipulation.

i.e. If someone wanted to change Perlin Noise 'Scale' from default 32 to some multiple, they could just type 32 * 4 and hit Enter instead of having to mentally calculate the answer and type 128.

Other applications have this feature such as Cinema 4D and Houdini. It allows the user to maintain their speed while working without being slowed down by simple math.

Add ability to set color(grayscale value) of selected pin(s) by picking it from the screen.

Without exposing parameters ,creating subgraphs etc.
Simply adding new in/out for making same operation to another input.