Graphene's team takes a fairly hostile view towards feature creep, possibly for very good reasons. They basically only add features that improve security & privacy. Everything else is stock AOSP.

My personal hill to die on is that the launcher uses lil tiny icons and text, which I find hard to read, and alternative launchers are a bit of a privacy and security disaster. They refuse to add anything to the built in launcher to adjust this, and suggest either raising all of the sizes (with accessibility, which affects all apps) or use an alternative launcher.

Alas it is still a very nice operating system.