Ideas

Add a switch in V-RayDecal to override only specific channels (Diffuse, Reflection, Refraction, Coating). For example, you can create a wet effect by overriding only the coating channel. (This will not affect the original Diffuse channel.)

Please add Energy Conservation on Refractive materials.

Corona had released a Fabric Material in Corona 14, its really neat and it will be very helpful to have it in V-Ray too. Please consider to integrate in next update.

Pursuing of ability to choose the best workflow for different heavy tasks and situations of our Workflow. I would strongly recommend giving us the ability to change the output of 32-bit EXR like Single-Layerd EXR with different compression - espec...

A dedicated Tiles generator like Bercon Tiles/Corona Tiles but built for V-Ray, Compatibility with BerconGradient or dedicated gradient map to create more complex tiles

More than those 3 automatic previewing options possible (Face Skipping, Refined Clustering, Vertex Clustering ). being able to create one's own simple preview (for furniture, any objects... event buildings)

such as any cosmos proxy asset.

Add Overscan feature, allowing you to expand the image above the specified resolution.

The blurry reflections and refractions in the material editor (both compact and Slate) can be very noisy, especially when viewing an enlarged shader ball. The increased noise makes it difficult to evaluate small noise bumps and overall shader qual...

It seems to me that options RE as a render element is a relic from past, why its not part of the V-ray tab in render settings? There are already other format related options so why not all of them.