Option for hair to use normal data from surface they're emitted from

The left image is the normal data of a hair particle.

The right image is a long process of converting the hair into it's own mesh object, and using data transfer modifier to transfer the sphere's normal onto the strands. We should be able to do that using just shaders

Why is this useful? It would allow for a plethora of unique NPR render effects, like anime looking grass, or cell-shaded fur on characters. An example of what that could look like is this (I've shared this image prior, so apologies)