Really? I'm reading the thread and shaking my head.
You guys aren't just doing ZOS a favor by being Beta testers, you're also reporting bugs, glitches, and server issues (well, hopefully you are...). Why do you feel that you should get something special in-game? Is getting to play the game early and personally witness the build progress not enough?
Is watching the game improve from Beta session to Beta session not "reward" enough? To know that your input has helped craft and shape a game to be even more amazing than it could have been otherwise?
ZOS could have simply hired professional or in-house Beta testers (like every company does for the Alpha phases of a game) and not had this at all. Aside from a thank you for helping us, why should you deserve something more than a brief mention in the game?