It doesn't make sense to add drawing for RWT because you can easily use Line Renderer, or any third party drawing asset.
Use GetWorldPositionByCoordinates action to convert coordinates to World Position.

It would be very helpful to us if you could add PlayMaker actions for RWT similar to the actions ou created in OLMaps to draw splines on a terrain (in the drawing section).

The most urgent to us would be DRAWTXT that draws a spline using the lat lng coordinates.

Best regards, Phil