For customization, you can find Dr. Ketan ROM tool, which offers several tweaks including clock, system UI, theme store, and scaling.
Overall, this is a great way to get Android 6.0.1 Marshmallow with root and S7 Edge panels working on your Galaxy Note 4. I should have an update for a full S7 Edge port ROM eventually but for right now, this is the best it gets so give it a try this week(end) and do let me know what you think!
Download for SM-N910G or SM-N910F:
Download for T-Mobile SM-N910T or Canadian SM-N910W8:
Download H Vitamin kernel for SM-N910F, SM-N910T, and SM-N910W8:
Download SuperSU to get root:
To install, make sure to make a backup ROM first, then follow my guide on How to Install Android 6.0 Marshmallow ROM with TWRP!
For SM-N910F/SM-N910T/SM-N910W8, install ROM, install Data/Call Fix, install H Vitamin Kernel, install SuperSU, then reboot!
For SM-N910G, install ROM, install SuperSU, and reboot.