There are some interesting plot twists scattered amongst the predictable plot points, and the casting was diverse enough to follow the "world is at peace" premise. The ultimate faults of this movie are cheese and plot holes, in particular the man getting up and walking after supposed years of being comatose, especially considering he seemed to be hooked up to pretty standard (i.e. not advanced) medical equipment. They never mentioned he was a descendant of Beatrix Kiddo. This movie is, at best, a good first draft. It would need some serious editing to be considered good.
These movies consistently face two problems: 1. the pop culture references they choose to parody are stale and clichéd by the time the movie comes out, and 2. even if they were more timely, the jokes just aren't that funny. Really, there's no chance of success here.