...more impressions:
- the microphone volume is much better!!! I have tested the skype video call with version 2.8.0.920_v16.
- the usb charging seems to work again with opened tablet!

Wifi closes when tablet is in standby mode.

@djsebyss I don't know if it is possible, but if you can on your next update to include the support for bluetooth adaptor from cm9 v7.