I was looking at the latest logcat that you sent in this thread (logcat_UYT2_46.zip) and found interesting things.
Your problem is that the ROM boots up but you can only see wallpaper.
This is related to graphics stuff for sure.
I had a quick peak at the logcat and found you're missing a few graphics libs from the stock ROM.
Failed to open libwvm.so: dlopen failed: library "libWVStreamControlAPI_L1.so" not found Failed to open FACTORY_LIB Error : dlopen failed: library "libdashplayer.so" not found
btw your hwcomposer crashes a lot so I think it can be the problem too.
Edit: First error that I can see from hwcomposer:
E/hwcomposer( 123): [HWC] Failed to get display attributes (dpy=1 is not connected)
E/memtrack( 147): Couldn't load memtrack module (No such file or directory)
@Matty1993 - Have you by any chance encountered this issue? Well since you were able to port Android 5 and later to a 3.4.67 kernel and all...