Rotoscoping is one of the most important tools for any interesting compositing
project and it's one of the areas where more work has been done developing Ramen.
In the roto node, shapes can be parented and transformed, tracks applied,
points inserted or removed at any time, ...
Shapes are rendered with antialiasing and can have motion blur.
Of course, there's also feathering, grow / shrink and other common options.
Applying tracks to shape's individual points and importing / exporting shapes are
left for a future update. ( Tip: Ramen's file format is very easy to parse, for example in Python.)