just to let you know, I'm working on new version of Kristinka Hair.
Basic new feature is a complete new way of guides-filler relationship, which I'm planning for a long time. In old one, hair filler was searching for three closest guides and interpolated in between.
Now it's a kind of reverse process, first Point Cloud emits a three guides at triangle corners, then filler just creates points and strands in 'chunks' in between. Side effect of this is:
1: 'clear' interpolation, also splitting between the styling operators
2: ability to do everything in single ICE tree
3: speed, especially on high hair counts, let's say it's about 2-5 times faster (if hair filler is the last operator)
4: nice emission from meshes too, for now only triangulated ones
5: ability to paint emission density by 'chunks' without deleting points/strands
6: much more user friendly (at least I think so)
7: no more disappearing of filler strands in Mental Ray renders ( at least I hope so )
Drawback is a bit weird way of attaching to mesh stripes/tubes (three guides should go to one stripe/tube), but I think I've founded a nice way for this.
I'm also trying to consolidate everything, for now 'hair' and 'fur' is the same thing, there is just one 'big' Follow NURBS node with all functions of previous two, what is called 'Simple Hair', serves as fur too. Still there will be a few emission types, from high segments counts for long hair, to low counts for short hair/fur, but user should be able to change these ways in the same ICE tree.
From styling stuff, there is a new node that interpolates in between (at least three) curves, but also is able to interpolate 'around' the emitter, not just linearly. Also I hope there will be a 'Curls Advanced' node, able to 'curl back' (like Claudia Cardinalle in Once Upon a Time in the West) - existing one just pushes the strands in local space.
In picture, there is 'In Between Curves' in 'around' mode, all that mass is done just with 4 curves, without any additional PPG adjusting. Also kH Grouping node on emission from triangulated mesh.
I hope I'll put it on the road in next 10-30 days. Everything is changed, there is still a lot for testing.