LG released the 4.4.2 source code for the D802 as well. That means every device should get "native" support soon :)
I installed the build from the experimental latest folder.
1.: works but opens up the camera
4.: doesn't work but V gesture again disables flashlight
5.: works (play/pause)
9.: doesn't work...
This is the OnePlus 2 camera apk with working laser focus AFAIK: https://drive.google.com/file/d/0B1WgAwb79dTuQWJnQmo4aHpTZEE/view
The D802 Lollipop source code is available: http://opensource.lge.com/osSch/list?types=ALL&search=d802
R23 is the best build so far!
It runs very smooth and is very battery efficient.
Thanks for your amazing work RenderBroken