While it is not a bad idea to make that DT status more visible/accessible, if it is made through badges or something so desirable, you can bet that people would abuse the system even more, as many would want to have that badge, and it would bring more harm than good.
However, I would like it if there would be something that makes it obvious to the user himself that he's on DT.
+1
That is something that i would like to see. I am pretty sure that there are plenty of people that have no idea that they are on DT lists, especially those on DT2. I also had no idea that i am on DT2 until one other more experienced member told me.