What are you talking about? Launchers are just alternate home screens, the degree to which they alter functionality varies greatly. For example, I use Nova Lau

What are you talking about? Launchers are just alternate home screens, the degree to which they alter functionality varies greatly. For example, I use Nova Launcher, and when you first install it, it's entirely identical to the default launcher. Most people using my phone don't even know that it's not the default.