My point on this topic is that it is difficult to talk about relation names without talking about their structure, and it is difficult to talk about relation structure without talking about roles. I don’t remember if was an EVs or an E, but last week we even encountered a route whose stage numbers were stored as role names 
That is why I proposed EV17 as a first example, because I hope that it will raise the right questions and help us find out if there are things to clarify in your proposal.
Well, that is what examples are made for. If I give you the whole list of issues I have encountered with names as a contributor, a maintainer or trying to customize a rendering, most people will just look away from such a long list, and the rest will ask for examples. Let’s just see what issues come out of concrete examples shared by the whole group, and discuss them as a group.
That is what we are trying to do here: share questions so as to make more informed contributions to the proposal. Sorry if it feels like a step back to you, but it is a necessary step for the rest of us and it will definitely help build a consensus that may last long.