If you already know about xposed, why haven't you tried it?
The majority of roms here allow you the option you're looking for as well. Start with the Safestrap thread then read the OPs for a rom that meets your needs.
BTW, threads like this belong in the general/help forum.
OG RAZR XT912 got 4.4 before S4!
My RAZR got 4.4.3 before the S5!