Default Custom Navigation Bar

I have been searching xda and Google for weeks trying to find a way to get a truly customizable navbar like we can on older versions of aosp, haven't found a 4.4.x aosp rom that can do this yet either.

Gravity box gets me close but I can not change the symbols or single tap functionalities. I'm trying to get the phone and messaging apps incorporated into it as a start but I'm basically looking for a permanent navbar/dock to put my most used apps to switch instantly between them.

If anyone could point me in the right direction I would greatly appreciate it.
Current phone: Samsung Galaxy Note 3
ROM: KitKatKiller v1 test 2
Kernel: Beastmode 3.4.0 Beta .9

Retired phones:
HTC Mogul (Titan)

Favorite quote:

If builders built buildings the way programmers wrote programs, then the first woodpecker that came along would destroy civilization. ~One of Murphy's Laws of Technology