I like the idea of having a middleman or third party option. And I agree that it'd be extremely beneficial for many duelers, especially the newer ones. But the one thing I will say is, and I touched on this briefly in-game, is that if you've reached the point where you're willing the take a gamble with your TC and items, then you should at the very least have some degree of knowledge on what you're getting yourself into, and who you're getting into it with. And that you should be accountable for taking the precautionary steps to ensure your own safety - whether that be to take screenshots or to double check the inventories of whoever it is you're dueling to make sure that they have whatever it is that they're wagering to duel against you. If something seems off, then your gut instinct is probably right. Some scams can be easily avoided with the use of common sense.