Cinelerra is not perfect as an editing and special effects application, but, as a concept to build a studio upon and as a collaborative tool it is as close to being perfect as any software application can be because it is inherently flexible, inherently free, and still progressing.  For the artist or the studio who desires to  eventually master both the production and technical side of their production environment Cinelerra can be configured (with practice) to do specific editing and processing tasks with audio, compositing, effects, images, and many more features with a powerful render farm that works away while you are using the advanced GPU to give you real-time effects including the processing of multiple layers and edits right in front of you.