Rotoscoping software works using splines, which are a series of points connected by a line or curve. These splines are adjusted from frame to frame, so that they continue to conform to whatever shape the artist is tracing. Because rotoscoping software includes the tools to paint an image, rotoscope artists now find themselves doing a lot of paint work as well. We do so much more painting. Painting might mean taking someone out of a shot, or replacing a sky, or painting out the tennis balls used as visual effects tracking markers.
Some skills remain necessary, including a sense of what is important.
More important is consistency. That kind of understanding is key, Bertino agreed. It's possible to put too much detail and confuse matters. You need to have that sense for judicious editing. That hasn't changed at all.