It depends on your perspective. Some might consider it new as it brings in new elements and developments. But in a broader sense, it still builds on the existing Scott Pilgrim universe.
Definitely. 'Scott Pilgrim Takes Off' draws inspiration directly from the comic. It retains many of the key elements and storylines from the source material.
Sure is. The comic of Scott Pilgrim vs the World gained quite a following before the movie adaptation came out. It has a unique style and engaging storyline.