[Existenceblinks]

Thanks Dan. Yes, I agreed on the ui part, it seems to work in most cases. Some html tags have relation like `<datalist>` or `[popover]` attribute, but if we make all kind of relations trivial then it's benefit for sure.

[danabramov]

Yea, and also to clarify by "UI", I don't necessarily mean HTML — it could be your own React components and their props. In idiomatic React, you generally don't have these kinds of "global" relations between things anyway. (They could appear inside components but then presumably they'd be bound by matching IDs.)