Great work! The OEM OS was unbearable with CM 13 and totally unusable with CM 14. Thanks! I have one comment and one question:

Q: How to turn on full root access, not only ADB? I rather not install SuperSU nor Magisk.

C: I first clean flashed using TWRP 3.1.0, but the phone got stuck on boot with the lineage logo just doing its stuff forever. Upgraded to TWRP 3.1.1 but if choosing Reboot System, it still got stuck until I did a hard power off. Then it booted normally. Perhaps useful to know.