I keep the home screen the same as first install, and add the most used apps around the GOS apps. I then add a calendar widget to the top of the screen because I'm very forgetful. My wallpaper is standard GOS.
I don't install any apps that are design to replace to GOS system apps (like the keyboard), if there are better solutions to the system apps, I trust the GOS team to implement them accordingly.
I don't like the idea of trusting too many developers especially ones that may require high-level system access.