I don't know that it raises the priority to "serious", but by way of reason this one kind of needs to be fixed: apt's behavior has changed quite substantially over the past couple of decades or so. What version first supported each one? That's what the changelog is for, and arguably it ought to be somewhere you can get at it easily as an end user. The instructions for where to get it lead to themselves.
I'd put this one in a should vs. must category for fixes, though I understand time is a somewhat limited commodity. Joseph
