specific Improvements to hair and fur

I am aware that there is already an idea for a seperate hair modifier. However, I have some more specific ideas about it's implementation.

1. As of now, parsing all the hairs takes very long. I'm not sure if it's possible to keep the hairs cached in some way or improve the parsing time for hairs

2. It would be great to have the ability to base the hair's root direction (the vector of where the hair points to) on a bump map, and even more ideally a corona normal node (so you can use both a bumpmap and a normal map if you want

3. The ability to change the corona hair color based on a map. Right now this is impossible

4. More of a question really; Why does the hair need to parse again for a material change? When i change the color of the hairs, the hairs need to be parsed all over again. This is not the case in software like blender where the change is instant.

5. instead of total hair count, have a density per sq metre so that if you apply to a model with a larger surface area, you dont need to increase hair count manually.

Either way. I think building a modifier from the ground up with these features would be a good and solid idea. Also creating it with archviz in mind instead would be amazing since most hair and fur modifiers are meant to be used for things like fur or human hair.