It doesn't sound like much at first, but the gains are huge. It's a relatively simple setup, and you're collecting "tens to hundreds of times" less data without sacrificing accuracy. That could save a tremendous amount of time and let studios focus on recording scenes, rather than slogging through prep work. You could not only see more widespread use of facial motion capture, but more complicated uses of it with numerous actors. Disney will have to refine its technique, and there's no guarantee that it will offer the feature to other companies. However, it's safe to predict that at least some movies and games will have an extra dash of realism in the future.