Good CGI can really help a film out, there's been quite a few movies that have benefited from them. Visually, I'm not worried at all, even though they said 80% of the movie is going to be done in post production, so that means massive CGI. Story wise? It seems like an alternate take on the series, but as long as it's not totally void of Dragon Ball elements, I won't mind. The cast looks pretty good, at least the two main cast members are pretty solid actors from what I've heard.