I am a very happy GrapheneOS user since the past month. I am very grateful for the immense effort this team is putting out and I can't thank them enough. My experience has been really really solid so far and have been moving away from Mr Google slowly but steadily.
I was however wondering and I may be missing this completely. On the stock pixel there is this double tap on the back of the phone with your finger to do a specific function. Take a screenshot, or open a specific app. I think its called quick tap. There is probably a privacy / security related reason why this is not on the GraphenOS. I bet it has some google play services dependency but I was still wondering if this is in the pipeline or a feature request.
Above anything else, I feel relieved running this OS and the fact that as a user, OS wise, the fact you are barely giving up anything is such a gamechanger.