Naming each generated element with label from data

[shotrifork]

A feature request (idea) is to name each generated element with the value (y) or label (x) of each element, perhaps through some user specified value.
Like shown here, where the x/label value of the example JSON.

Could be implemented in a simpel way, where the user gets a dropdown with predefined forms of naming like: "X - Y", "X", "Y", "X (Y)" - or the advanced form where user can enter own value, like "day: X" => "day: mandag" for instance with the example json (which are random numbers of each week-day).