I would love to be able to pad the tokens to e.g. 4 digits, so that lexicographic sorting of the resulting pdf files is the same as the natural (numerical) order. E.g with job ids, counters, or also when ensuring that filenames are unique ("don't overwrite existing files").

https://en.wikipedia.org/wiki/Natural_sort_order
https://en.wikipedia.org/wiki/Lexicographic_order