[Galaxy S II Q&A, Help & Troubleshooting] revuwa:
EDIT: I've successfully tested the latest build from @infected_ which brings things like 'clear all recent apps' button, added features like 'ActiveDisplay' and fixes things like the wacky signal strength. So I switched to this ROM and depreciate this thread.

Review of omni-4.4-20131118-i9100-HOMEMADE.zip

(tested with runtime set to: ART)

[what works]

► Calls (Phone) / SMS (Messaging) = stable

► WiFi = stable

► Alarms (Clock) = stable

► complete Settings (incl. unlocked points <Developer Options> and <Performance>) and <Network speed indicator> = functional

► Calculator, Calendar (also tested with 'Birthday Adapter' incl. synchronisation), Dev Tools, Gallery (incl. video funktionality), GPS (tested with OsmAnd incl. compass functionality), Music, People (incl. vCard import), Torch (incl. SOS) = successfully tested, personal impression: stable

► Camera (incl. lockscreen widget and front camera) = fully functional (video recording, too)

► DSP Manager, Bluetooth, Email, Movie Studio & Voice Dialer = successfully opened, but not further tested

[what doesn't out of the box]

► Browser = basically working, but crashes if open <new incognito tab> error: "unfortunately, Browser has stopped."

☼ doesn't found a workaround yet. The open source browser app 'Tint Browser' shows the same behaviour on incognito tabs

► (managed) root access

☼ workaround: install SuperSU

► use the phone as mass storage device

☼ tried within 'Terminal Emulator' app:

# su

# setprop persist.sys.usb.config mass_storage

# reboot

(on Windows you probably need actual USB drivers) but I can't bring up a connection after pressing the button <Turn on USB storage>. Rollback (to default) is:

# su

# setprop persist.sys.usb.config mtp,adb

# reboot

at least with that (MTP) setting I was able to connect the device, (but just not as mass storage device) under:

• Linux (out of the box) and

• Windows (after installing Kies 3.0 and the prerequisit for that under Windows N and KN versions: "Microsoft Windows Media Feature Pack").

(Kies could say: "This device is not supported by Kies 3.0. Please open Kies 2.6 and then connect the device again." But just ignore this and connect the phone as MTP device under file explorer).

► signal strength is wacky

☼ IMHO: that's not a real problem than just a little bug, because the signal is very good (instead of the displayed sticky single bar). The value of the Settings -> About phone -> Status -> <Signal strength> is: "2147483647 dBm 255 asu" and will never change, also if you switch into airplane mode...

[what would be nice to have]

► deactivated cell broadcasts by default (because I’ve got broadcast messages every few seconds…)

☼ workaround: deactivate them manually over Settings -> More... -> Cell broadcasts

► possibility to remove the Google search bar from the desktop (seen embedded in CM)

☼ workaround: Settings -> Apps -> All -> Search -> Disable (but if you disable this built-in app other apps may misbehave! You also may need a reboot to remove the white frame on the desktop)

► possibility to modify (especially reduce) haptic feedback intensity (seen embedded in CM)

☼ partial workaround:

• for keyboard haptic feedback itensity: Settings -> Language & input -> Android Keyboard settings -> Advanced settings -> Keypress vibration duration

• for system wide vibration feedback (on / off only): Settings -> Sound -> Vibrate on touch

• or try a free app like 'Vibrate', seen in Google play store (not tested)

► possibility to dim or turn of the lights of the touch sensitive buttons (seen embedded in CM)

☼ partial workaround:

• to disable the lights completely put the following into a file with a name you want under /system/etc/init.d/{filename}:

echo "1" > /sys/devices/virtual/sec/sec_touchkey/force_disable

(tested with file permissions set to: -rwxr-xr-x) thanks @eskriminal

• or try a free app like 'Soft Buttons Light', seen in Google play store (not tested)

► a button to clear all recent apps (seen embedded in CM)

☼ the hard way: slide out recent apps one by one

► keyboard gesture typing functionality

☼ workaround: install Google Keyboard

► possibility to restrict app permissions like APP OPS setting in Android 4.3 (seen embedded in CM)

☼ partial workaround: install the open source app 'AFWall+' to restrict network traffic of your apps. Nothing found for the permissions, yet.

Other experiences, wishes, corrections, comments etc. are welcome!