I only have one suggestion: a set of registry edits to make Bluetooth audio much better quality.
This ROM has default settings for A2DP.
Simply navigate to HKLM\Software\ Microsoft\Bluetooth\ A2DP\Settings\
Change "UseJointStereo" to 1 (from 0)
Delete the "MaxSupportedBitPool" and "BitPool" entries.
Restart the Bluetooth stack (turn Bluetooth off then back on), or soft reset the device.
Enjoy great A2DP quality!
Great ROM!