As always, I appreciate your opinion and I understand where you're coming from.
I can understand that not everyone is willing to share their real name and we will not force them. I would like to see people at least use names that appear like legitimate names and hopefully we can find a way not to have people use the same names.
Our database will keep track of name changes on a league basis, so even if you play in three tournaments with three different names, it will all link back to the same user and is traceable for anyone viewing your profile. You will not be able to change your name during a league (unless you have a typo or something).
In the end, when listing stats and what not, we're always referring to a user ID, so if we were to decide to change our mind or display Name + gamertag, that's totally doable. The site will see many changes during it's development, some will be good, some will perhaps be a step in the wrong direction and the community will have to help us by providing the feedback on what is loved and what is not. :)