There is no factory images - download and install? (I know about Pixel and Nexus :) )
it seems like flashlight bug is gone, it is finally fixed in latest developer preview build mpa44g on nexus 5
What is the best radio for Europe. I am currently on 11.76A.3504.00P_11.24A.3504.31_M
Maybe this is the problem with robotic voice when you place call?
The robotic voice can be fixed with enable/disable speakerphone