Here's my config: ROM Jamie's CM 4.2.2 Unofficial
Kernel : 4Aces v28 - no settings apk. Fast charge enabled thru CM menu.
Updated to CM 2/21 - cm1-10.1-20130221-Nigtly. Directly from updates menu of ROM. No problem reportable during update.
Very rare screen flicker. Not done anything to developer menu since it is not often enough to be bothersome.
Bluetooth works - mainly use for Audio output. Navigation notifications also go out in between music, and music resumes cleanly. Don't know about keyboard or mouse, do not have them. BUT BT does suddenly go off (NEVER while playing yet), mainly during connection phase. Reboot fixes it. If adding new device this may happen but reboot fixes it.
GPS is good even on real rainy/cloudy day.
Wifi is very good. ONLY, it sometimes does not reconnect to my router automatically. Need to click on network to re-connect. No biggey.
Changed number of rows/columns to 4 for home screen. Was getting icon names cutoff, and icons going to close to edge.
Overall VERY SMOOTH ! Really nice and kudos to both devs !!!!!!