Vertical Stretch

perlin noise has a horizontal stretch, but no vertical, unless you rotate and then you lose the horizontal. it strikes me that it could use both a horizontal and vertical stretch.

this may also apply to other components.

umm, no, not at the same time. one slider for each.

I believe one way to think of this is that increasing the scale increases both the vertical and horizontal stretches equally.
Then if you want more width (or height) stretch then adjust the angle accordingly and add stretch... So you can get any height to width ratio you want.

I suppose if you are totally in love with a specific perlin noise pattern and the angle adjustment for some reason ruins things (which is probably (very) rare), you can then use offsets and with profile gradients to add stretches too. (But it is a bit complicated I suppose...)

(I wouldn't complain if such a feature existed, it's just that I see it as unessential.)