They probably just want to provide a real world experience in an online game. The same way that you would buy actual cards outside is the same way that you would in the game, only with DP. Personally I think that Konami probably doesn't know that much about its open source counterparts, and that would probably be the reason as to why no one will take interest in it, because its idea isn't better than those counterparts. I think, however (even though it might not be in my place, as I'm new here) that it might be a great way to test people coming into the school because it actually forces them to use what they have to come up with strategies(just like in real life.)
Oh, and it lags too much on my computer so......|\|0 |\/|3 G|_|S7A