As a casual hackathon participant, this is a really great tool. I've seen countless teams with winning ideas go down in flames when they spent two days on the log-in page. And I attribute any success I've had at hackathons more to my ability to prioritize away from those activities than my actual programming chops, which are average at best.

The biggest advantage you'll get out of this system is that it's simple, and you know it in and out because you built it. With all of the other tools that do the same thing, you run into the same problem: you don't have time to learn a new tool at the hackathon. By the time you've figured out Yeoman (which looks really cool), you only have a few hours to implement your app's actual functionality.