What modules I Use
I have stock 4.3 Samsung ROM Note3, rooted.
I use "GravityBox" for most of my UI tweaks, with "Wanam Xposed" for more Samsung specific (like don't show NFC icon), Samsung keyboard extended symbols.
I love "App Settings" to set apps like: Gmail, Email, Chrome, Firefox into tablet mode with smaller font size, love Gmail app with tablet mode on the Note3.
I Use "NFC LockscreenOff" to get custom Tasker tasks being passed NFC tag information, even when the screen is off, to unlock my phone by tapping my wallet (contains an NFC Visa credit card).
"Greenify," for managing misbehaving apps.
"BootManager" even though I can probably get away with not using this, I still like it the most to select apps not to start at boot time (I see you Facebook).
Just the main Xposed modules I use, hope it gives you a few ideas.