Default [REQ] Xposed Module/Flashable Zip for modifying unlock pattern

Hi!

I am using Nexus 5 with stock rom and Xposed framework.
I don't know if this is possible with an XPosed module, but I would like to use an unlock pattern with a 4x4 grid. It is available on CM, and there is even a thread on here describing the necessary steps:

http://forum.xda-developers.com/show....php?t=1868811

Can this be done via module or via flashable zip? I also requested this feature for GravityBox as I think it would fit right in.

Thanks in advance for your input!