These are what I have on my phone right now.
Gravitybox - Lots of customization
App Settings - Per app settings for DPI, immersive mode, etc...
Google Search API - Allows custom voice search. I have these plugins -
• Google search music controls plugin - Play, pause songs (I'm not in the US)
• Voice toggles plugin- Toggle Wifi, Bluetooth etc with voice.
Xposed GEL settings - Allows customization of the stock launcher.
Xposed injector - Adds a xposed modules section in the settings page which lists all the modules you have installed.
Complete action plus - allows customization of the share and open with menu.