Right click in VS and choose View Code, which will open the xml definition. Then you can use Find to find the reference. Do this for the DSV,...

One thing about my business case that's not apparent from my trivial example: The "child" GameDim dimension would grow by 1000s of records everyday, being roughly a million to 10...

Thanks, yeh, that's what I was saying I do now. I just leave attribute relationships as they are and setup aggregations, but that feels like a hack to avoid...