It really depends on yourself, to be honest. If you know that you've improved so much since you made that that it would be a waste of talent to not start fresh, then start fresh, and vice versa. The audience don't know anything about the game other than that video, which doesn't really tell us much (don't mean that in an offensive manner, by the way; it looks nice).
But if you've put a lot of effort into it before, and still want to see it end yourself, then going on with it might be a good choice.