I started a new repository on Github to create some templates for Xamarin projects that help support some better practices right off the bat such as IoC, DI, MVVM, etc.
It includes the source as well as a Visual Studio template you can use locally. I'll be adding many more VS templates to this as well to help reach more project types and preferences.
Feel free to use and contribute! Hopefully this can save you as much time as it has saved me already.