At first glance, I tend to disagree. I don't always know which features will be used in the long-term on a new SQL Server. So I install AS,IS and RS. Then I install the latest Service Pack. (If I install RS later, I will have to reapply the Service Pack to fully patch that new module)

And by having it already installed, it is ready to use if/when we decide to use that feature.

Of course I agree with stopping the services related to an unused product.

This is just my practice.