Well, the system is clever but there are complications. For example, how do you stop people from voting twice? What if people want to change their mind? What if somebody gets a new deck and wants to compare it to their older submission? There would have to be a profile system where you log in, and you can see your exact vote for each category. But that is too much work, it also provides no incentive for the user. I think something like this needs to be added to a site which is already popular and has user, who already have accounts.