Without support of symmetry for stencils, It takes insane amount of time to produce hard surface symmetrical assets.

Symmetry for Stencil

or a button that mirrors the layer across one axis. <-- can be more useful then a symmetry

Add more particle receiver and emitter
Example
Create splash on car body to create dirty car
Particle system support brush!
Yes ,to create area emitter or receiver
Like example

need a way to have controll in c4d that is similar to designer as the baking path is long and complicated and ends up looking nothing like the work done in painter.

For example i'd like to export AO as a texture to use in Unity. I can do it now but it's long and annoying workaround.

Currently working on a laptop at home when coming back from the studio. The limited resolution is annoying but a fullscreen toggle shortcut to just see the mesh in my full resolution would be great. #Lowend Moving the UI arround is great but not enough to get a good / big result.

Substance Painter should support baking textures following a layout of for example 512x256 or 1024x4096. Basically any non-square textures would be fine.
I can see though that baking non-power-of-two textures might be a little too far fetched (probably because of how the GPUs treat rendering).

It would be very nice if folders in the layer stack stayed closed when switching between texture sets. Now, every time I switch texture set all the folders are unfolded and it's a pain to find the layer I'm looking for if I don't manually go through the list and close everything.

When we renamed channel like user0 as for example Dirt, it could be nice to have Dirt write in layer switch visibility (base color, height, roughness...Dirt) instade of User0.

Adding a simple search filed into a popup texture ; lot of images can be complicated to find a picture or ressource.

Would like Painter to have a baker and map output for Ambient Occlusion/Cavity mapping appropriate for the UE4 material workflow.

Currently after finishing work in Painter, I have to reload Designer, input my Painter height and normal outputs and make up a new Ambient Occlusion output that's modified to only occlude the fine cavities from the details. Would be nice to not have to load up Designer every time to do this.

Add Ambient Occlusion map channel for materials so you can create a substance in Substance Designer or material in B2M with custom AO map (like small cavities etc) and mix it with baked AO map.

This way you can create material based AO details without the need of creating them on high poly model.

The ability to project textures in any combination of X, Y, or Z axis, not just all three at once

In photoshop you can double the size of the UI. Please see attached image to get a clear picture of the problem.

now my material shelf is a mess, would be great to have custom shelf to store custom material based by project (?)

Auto-Explanable. First , actually, we can put only 2 decimal after point, this is lot difficult to position the texture over the UV. we need more decimal precision.

And second, would be better if we have a Manipulator tool to position and scale the texture-repeating over the UV.

It would be nice to avoid that kind of texture padding/bleeding on the finale exported texture. Its kinda difficult for us to know what is what when we have different uv islands , but also to give the final texture to a client . A feature to remove this endge padding would be great :)

Mask stack or mask group if U like, would be benefitial feature in next update. Work undestructively is a goal for us all!!!!

The projection tool is great but the resolution of the overlay image should be higher or should be related to the zoom.