Multilayer exr textures
Just like we have multilayered exr for rendering and composition, where we can store all the render layers and AOVs (Beauty pass, z-depth, position, direct/indirect lighting ...) in one file per frame.
It would be great to have the same for textures. One file packed with all the textures (Base Color, Metallic, Roughness, Normal, Height ...) per UDIM.
The only missing part is the writer and reader for the texture/material editor environment.
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This is actually planned! As part of the new baking workflow, so texture channels get baked into a single EXR file. code.blender.org/2022/02/layered-textures-design/