Troy Ault

Yes take a look at xSQLServerConfiguration. Specifically look at this example --> https://github.com/PowerShell/xSQLServer/blob/dev/Examples/xSQLServerConfiguration.ps1 This gives you the ability to configure anything that is in sp_configure.

Sorry you are correct I was looking at configuring Filestream. To enable it there are a couple options as you pointed out. One at installation time which would require modification...