I am not sure this is really cloning a feature request. I had to pick a product line - For me it is more baseline installation.
WPRoller.com exists currently. Its a clean service (as I have seen
/ experienced so far since 2014). It has it's limitations though.
My request would be as a true Premium service provider, could such a service not be replicated into the paid premium area, like a pick & mix of the WPMU Premium Plugins on offer? All ready to deploy and configure.