> cant be capped to range without calculating the whole graph.
Yeah, this is fair. Coracle does this, but it is expensive. It did end up being less useful than I anticipated, I will think about removing it.
Kind 5300 DVMs are pretty useful and well-supported, so we should at least keep those, but I'll update the spec to narrow the dvm feed kind down to just 5300.
Differences in interpretation are pretty unavoidable, since loading feeds involves all kinds of heuristics anyhow. But I get what you're saying.