Add Nodes to Path

[carmen]

I wanted to add 'sea currents' to a map, as in the figure:
   
It could be done in Inkscape through 'markers', but I wanted it as a purely 'stroke path'--better for small, indexed images.
As can be seen, I succeeded trough the following steps:
- oriented paths made in Gimp
- export them to svg, and open in Inkscape
- Inkscape Extensions -> Modify Paths -> Add Nodes... -> By max. segment length = 30.0px
- import the modified paths into Gimp, and:

• * ofn-path-edits -> Disjoin strokes
  
• * ofn-path-to-shape -> Functions on segments -> Modify segments -> Start=0, End=50
  
• * manually edit 2 of the segments in the resulting paths (it should be evident which ones would need adjusting)
  
• * path-arrow-heads at ends...
  

In view of the results, I think that the 'Add Nodes to Path' would be a likely addition to the Gimp path toolbox ( do you hear, Ofnuts?). Besides the use above and its variants, it also can improve the result of ofn-bend-path for squarish fonts with few control points--enabling still more "Bendiness" (I have a 'borderline' example somewhere).