The ability to add N number of new points, evenly spaced, between the selected points.
I know this can be done manually by clicking the line. That functionality is great and works very well but doesn't help, if you want precise placement of multiple points.
Ideally I'd be able to:
1) make a circle
2) convert to curves (now I have a curve with 4 nodes)
3) select those 4 nodes and add "N" nodes between selected nodes
4) (so if I chose to add 1 node between selected nodes) I now have the same circle shape but with 8 evenly placed nodes