Here's another proposal for a new node: Noise Generator Node
There are lots of applications for a 2D Perlin Noise fields for natural forms;
for example ocean wave simulation : http://www.alexlorman.com/oceanwavesimulation
Also it would be useful for random transformation the transition smoothly.
Of course 2D Noise fields could be imported as images into ImgSampler, however if they could be generated in NE
there would allow greater control and possibility of animation