I'm very excited about the coming launch and have been playing the beta from the start. But each time I try to play, the performance and stability issues make the process too frustrating. So I stop before I really get to test the balance and game-play aspects you are wanting us to look at. Then the next Beta comes out and the hope is that the issues have been fixed. And so on.
I don't know if many other testers feel the same but the stability issues seem to have been around for ages.
Specifically:
1. Intermittent blurry 3d.
2. Problematic fog in 3d.
3. Intermittent darkness in 3d.
4. System crashes (where you need to completely reset the computer).
5. Alt-tab (so we can write notes etc but continue playing).
6. Load game from menu without needing to restart (and now loading a game causes a system crash).
I would love to be able to give meaningful feedback but the above are real killers.