I'll be testing the new stuff with conservativex and bioshock soon.

Meanwhile, I made a fix to my intermittent call issues with the microphone on my Nexus 5. Not sure if it was due to a bug or a hardware fault, but every person I called reported a bad echo from my end. Not sure if this has been discussed here before, but my fix is as follows:

remount /system rw with: devel-su mount -o rw,remount,relatime,data=ordered /system

edit /system/build.prop (I used nano). Find the following strings and replace as indicated:

persist.audio.handset.mic.type=digital (replace digital with analog)
persist.audio.dualmic.config=endfire (replace endfire with false)

Save the file and reboot your device. Echo gone, call quality improved dramatically. Enjoy!