It would be nice to be able to use Graphics.Blit for image effects on cameras and in shaders that use render textures.

The OnRenderImage event needs to expose the source and destination render textures.

Graphics.Blit should be able to take in just 2 render textures and do a normal copy, and a 3rd input for a material. If the material is present then it should use the overload Graphics.Blit(src, dest, mat); which is for image effects

I would also like to see the ability to create render texture variables.

This is probably much lower priority than most other features, but the shader community would really appreciate this.