Allow us to trade and by names as if they where domain.
It is kinda irritating when someone already has the user name you want to use and there is no way to facilitate asking or paying paying for a name trade. I am sure a lot of people that do not actually stream and only watch twitch would not mind too much to give up their name if someone asked for it and even fewer if they where compensated for it. Even those that do stream could probably even give up their name if someone payed enough for them, because names can be important for recognition and people are willing to pay for it. You could even have a "handling fee" for it in you want a incitement to spend time developing this system.