While I am fine-tuning the kerning of a typeface I am finalizing, I was wondering — bearing in mind the expected needs of the average-to-advanced user of typefaces aimed at extended text setting — which could be the kerking pairs (or groups of pairs) which one might not immediately think about that is effectively handy to have incorporated in a professional font.
Or, inversely, these you can easily do without (ordmasculine and ordfeminine are used with letters?).
Any thought or consideration is welcome! :-)