We did a video on discord settings, linked below. My recommendation is to set the sensitivity manually for the gate/noise filter - around 70dB give or take should work right. I also like the Opus noise filtering better than discord's stock noise filtering.
Discord Settings
The latest firmware had a specific update regarding the noise floor/wooshing noise. If you're still having issues, please contact support.
Bluetooth and Wireless volume mix are being addressed, and will come out in a firmware fix.
Not sure about the channel balance, but I suspect that's a support related issue, I'd contact them.
Sorry if these things haven't been updated on! We do hear the feedback and are working on it, but as mentioned previously we're a small team and firmware and other fixes don't happen overnight unfortunately. I'll do my best to try to keep you guys updated more. I apologize for the lack of communication, and there wasn't anything malicious related to the drop off in communication. We are aware of these issues, we do hear you all and are working to get them fixed so your headphones work as advertised and so that you're happy with them! The official Audeze account is often used by our CEO Sankar, who sometimes gets very busy trying to fix aforementioned issues.
Please DM me if you have specific feedback and I will happily bring it back to the team!